LazStats: Add original sources, part 5

git-svn-id: https://svn.code.sf.net/p/lazarus-ccr/svn@7876 8e941d3f-bd1b-0410-a28a-d453659cc2b4
2020-11-16 10:25:30 +00:00
parent ec12bae971
commit 46d5d7c0fb
32 changed files with 7199 additions and 57 deletions
--- a/applications/lazstats/source/forms/analysis/multivariate/hierarchunit.lfm
+++ b/applications/lazstats/source/forms/analysis/multivariate/hierarchunit.lfm
@ -254,15 +254,16 @@ inherited HierarchForm: THierarchForm
    Height = 421
    Width = 397
    ActivePage = StatsPage
+    TabIndex = 2
    inherited ReportPage: TTabSheet
      Caption = 'Results'
    end
-    object StatsPage: TTabSheet[1]
-      Caption = 'Descriptive Stats'
+    inherited ChartPage: TTabSheet
+      Caption = 'Groups Count vs. Errors Plot'
      TabVisible = False
    end
-    inherited ChartPage: TTabSheet[2]
-      Caption = 'Groups Count vs. Errors Plot'
+    object StatsPage: TTabSheet[2]
+      Caption = 'Descriptive Stats'
      TabVisible = False
    end
  end
--- a/applications/lazstats/source/forms/analysis/multivariate/hierarchunit.pas
+++ b/applications/lazstats/source/forms/analysis/multivariate/hierarchunit.pas
@ -7,14 +7,10 @@ unit HierarchUnit;

 {$mode objfpc}{$H+}

-{$DEFINE OLD_PLOT}
-
 interface

 uses
-  Classes, SysUtils, Forms, Controls, Graphics, Dialogs,
-  StdCtrls, Buttons, ExtCtrls, ComCtrls,
-  {$IFDEF OLD_PLOT} GraphLib, {$ENDIF}
+  Classes, SysUtils, Forms, Controls, Graphics, StdCtrls, Buttons, ExtCtrls, ComCtrls,
  MainUnit, Globals, MatrixLib, ReportFrameUnit, BasicStatsReportAndChartFormUnit;

 type
@ -74,7 +70,7 @@ implementation

 uses
  TAChartUtils, TACustomSeries,
-  Utils, DataProcs, ChartFrameUnit;
+  Utils, GridProcs, DataProcs, ChartFrameUnit;


 { THierarchForm }
@ -128,7 +124,6 @@ var
  variances: DblDyneVec = nil;
  stddevs: DblDyneVec = nil;
  Distance : DblDyneMat = nil;
-  cellstring: string;
  i, j, k, k1, k3, L, w3, n3, n4, n5, M, col, count: integer;
  GrpCnt, Nrows, Ncols, NoSelected: integer;
  X, Y, d1, x1, MaxError: double;
@ -156,6 +151,12 @@ begin
    nCols := NoSelected;
    nRows := NoCases;

+    for i := 0 to nCols-1 do   // nCols = NoSelected!
+    begin
+      varLabels[i] := PredList.Items[i];
+      colSelected[i] := GetVariableIndex(OS3MainFrm.DataGrid, varLabels[i]);
+    end;
+    {
    for i := 0 to nCols - 1 do
    begin
      cellstring := PredList.Items.Strings[i];
@ -168,7 +169,8 @@ begin
        end;
      end;
    end;
-    for i := 0 to NoCases-1 do rowlabels[i] := IntToStr(i);
+    }
+    for i := 0 to NoCases-1 do rowLabels[i] := OS3MainFrm.DataGrid.Cells[0, i+1]; //IntToStr(i);
  end else
  begin
    SetLength(w2,NoSelected);
@ -185,9 +187,15 @@ begin
    SetLength(varlabels,NoCases);
    SetLength(rowlabels,NoSelected);
    SetLength(ColSelected,NoSelected);
-    Ncols := NoCases;
-    Nrows := NoSelected;
+    nCols := NoCases;
+    nRows := NoSelected;
    //Get labels of selected variables
+    for i := 0 to nRows - 1 do    // nRows = NoSelected!
+    begin
+      rowLabels[i] := PredList.Items[i];
+      colSelected[i] := GetVariableIndex(OS3MainFrm.DataGrid, rowLabels[i]);
+    end;
+    {
    for i := 0 to nRows - 1 do
    begin
      cellstring := PredList.Items.Strings[i];
@ -200,8 +208,9 @@ begin
        end;
      end;
    end;
+    }
    for i := 0 to NoCases-1 do
-      varlabels[i] := IntToStr(i);
+      varlabels[i] := OS3MainFrm.DataGrid.Cells[0, i+1]; //IntToStr(i);
  end;

  if MaxGrpsChk.Checked then
@ -413,30 +422,33 @@ next1:
        goto next1;

      // Print group memberships of all objects, if optioned
-      lReport.Add('');
-      for i := 1 to nRows do
+      if MembersChk.Checked then
      begin
-        if (k5[i-1] = i) then
+        lReport.Add('');
+        for i := 1 to nRows do
        begin
-          L := 0;
-          for j := 1 to Nrows do
+          if (k5[i-1] = i) then
          begin
-            if (k5[j-1] = i) then
+            L := 0;
+            for j := 1 to Nrows do
            begin
-              L := L + 1;
-              L1[L-1] := k4[j-1];
-              if k3 = 1 then L1[L-1] := j;
+              if (k5[j-1] = i) then
+              begin
+                L := L + 1;
+                L1[L-1] := k4[j-1];
+                if k3 = 1 then L1[L-1] := j;
+              end;
            end;
-          end;
-          if k3 = 1 then
-          begin
-            lReport.Add('Group %d (n = %d)', [i, L]);
-            for j := 1 to L do
-               lReport.Add('  Object: %s', [rowlabels[L1[j-1]-1]]);
+            if k3 = 1 then
+            begin
+              lReport.Add('Group %d (n = %d)', [i, L]);
+              for j := 1 to L do
+                 lReport.Add('  Object: %s', [rowLabels[L1[j-1]-1]]);
+            end; // end if
          end; // end if
-        end; // end if
-      end; // next i
-      lReport.Add('');
+        end; // next i
+        lReport.Add('');
+      end;
      goto next1;
    //until n3 = 2;
    end;  // end if
@ -447,29 +459,6 @@ next1:
    begin
      ChartPage.TabVisible := true;
      Plot_GroupCount_Error(XAxis, YAxis, GrpCnt);
-
-       {$IFDEF OLD_PLOTS}
-      SetLength(GraphFrm.Ypoints,1,GrpCnt);
-      SetLength(GraphFrm.Xpoints,1,GrpCnt);
-      for i := 1 to GrpCnt do
-      begin
-        GraphFrm.Ypoints[0,i-1] := YAxis[i-1];
-        GraphFrm.Xpoints[0,i-1] := XAxis[i-1];
-      end;
-      GraphFrm.nosets := 1;
-      GraphFrm.nbars := GrpCnt;
-      GraphFrm.Heading := 'NO. GROUPS VERSUS GROUPING ERROR';
-      GraphFrm.XTitle := 'NO. GROUPS';
-      GraphFrm.YTitle := 'ERROR';
-//       GraphFrm.Ypoints[1] := YAxis;
-//       GraphFrm.Xpoints[1] := XAxis;
-      GraphFrm.AutoScaled := true;
-      GraphFrm.PtLabels := false;
-      GraphFrm.GraphType := 7; // 2d points
-      GraphFrm.BackColor := clCream;
-      GraphFrm.ShowBackWall := true;
-      GraphFrm.ShowModal;
-      {$ENDIF}
    end else
      ChartPage.TabVisible := false;

@ -653,7 +642,6 @@ end;
 procedure THierarchForm.VarListDblClick(Sender: TObject);
 var
  index: Integer;
-  s: String;
 begin
  index := VarList.ItemIndex;
  if index > -1 then
--- a/applications/lazstats/source_orig/ERRORCURVESUNIT.lfm
+++ b/applications/lazstats/source_orig/ERRORCURVESUNIT.lfm
@ -0,0 +1,151 @@
+object ErrorCurvesFrm: TErrorCurvesFrm
+  Left = 172
+  Height = 276
+  Top = 104
+  Width = 383
+  Caption = 'Alpha and Beta Curves for z tests'
+  ClientHeight = 276
+  ClientWidth = 383
+  OnShow = FormShow
+  LCLVersion = '0.9.28.2'
+  object Label1: TLabel
+    Left = 7
+    Height = 14
+    Top = 87
+    Width = 135
+    Caption = 'Mean of the Null Hypothesis'
+    ParentColor = False
+  end
+  object Label2: TLabel
+    Left = 7
+    Height = 14
+    Top = 119
+    Width = 171
+    Caption = 'Mean of the Alternative Hypothesis'
+    ParentColor = False
+  end
+  object Label3: TLabel
+    Left = 7
+    Height = 14
+    Top = 151
+    Width = 182
+    Caption = 'Standard Deviation of the Distribution'
+    ParentColor = False
+  end
+  object Label4: TLabel
+    Left = 7
+    Height = 14
+    Top = 184
+    Width = 170
+    Caption = 'Probability of Making a Type I Error'
+    ParentColor = False
+  end
+  object Label5: TLabel
+    Left = 7
+    Height = 14
+    Top = 216
+    Width = 174
+    Caption = 'Probability of Making a Type II Error'
+    ParentColor = False
+  end
+  object NullMeanEdit: TEdit
+    Left = 198
+    Height = 21
+    Top = 80
+    Width = 60
+    TabOrder = 0
+    Text = 'NullMeanEdit'
+  end
+  object AltMeanEdit: TEdit
+    Left = 198
+    Height = 21
+    Top = 112
+    Width = 60
+    TabOrder = 1
+    Text = 'Edit1'
+  end
+  object SDEdit: TEdit
+    Left = 198
+    Height = 21
+    Top = 144
+    Width = 60
+    TabOrder = 2
+    Text = 'Edit1'
+  end
+  object TypeIEdit: TEdit
+    Left = 198
+    Height = 21
+    Top = 176
+    Width = 60
+    TabOrder = 3
+    Text = 'Edit1'
+  end
+  object TypeIIEdit: TEdit
+    Left = 198
+    Height = 21
+    Top = 208
+    Width = 60
+    TabOrder = 4
+    Text = 'Edit1'
+  end
+  object ResetBtn: TButton
+    Left = 288
+    Height = 29
+    Top = 72
+    Width = 70
+    Caption = 'Reset'
+    OnClick = ResetBtnClick
+    TabOrder = 5
+  end
+  object CancelBtn: TButton
+    Left = 288
+    Height = 29
+    Top = 9
+    Width = 70
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 6
+  end
+  object ComputeBtn: TButton
+    Left = 288
+    Height = 29
+    Top = 136
+    Width = 70
+    Caption = 'Compute'
+    OnClick = ComputeBtnClick
+    TabOrder = 7
+  end
+  object ReturnBtn: TButton
+    Left = 288
+    Height = 29
+    Top = 200
+    Width = 70
+    Caption = 'Return'
+    ModalResult = 1
+    TabOrder = 8
+  end
+  object NullType: TRadioGroup
+    Left = 8
+    Height = 67
+    Top = 0
+    Width = 252
+    AutoFill = True
+    Caption = 'Null Hypothesis Characteristic:'
+    ChildSizing.LeftRightSpacing = 6
+    ChildSizing.TopBottomSpacing = 6
+    ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
+    ChildSizing.EnlargeVertical = crsHomogenousChildResize
+    ChildSizing.ShrinkHorizontal = crsScaleChilds
+    ChildSizing.ShrinkVertical = crsScaleChilds
+    ChildSizing.Layout = cclLeftToRightThenTopToBottom
+    ChildSizing.ControlsPerLine = 1
+    ClientHeight = 49
+    ClientWidth = 248
+    ItemIndex = 1
+    Items.Strings = (
+      'One-tailed (Directional alterntive)'
+      'Two-tailed (non-directional alterntive)'
+    )
+    TabOrder = 9
+  end
+end
--- a/applications/lazstats/source_orig/ERRORCURVESUNIT.lrs
+++ b/applications/lazstats/source_orig/ERRORCURVESUNIT.lrs
@ -0,0 +1,42 @@
+LazarusResources.Add('TErrorCurvesFrm','FORMDATA',[
+  'TPF0'#15'TErrorCurvesFrm'#14'ErrorCurvesFrm'#4'Left'#3#172#0#6'Height'#3#20#1
+  +#3'Top'#2'h'#5'Width'#3#127#1#7'Caption'#6'!Alpha and Beta Curves for z test'
+  +'s'#12'ClientHeight'#3#20#1#11'ClientWidth'#3#127#1#6'OnShow'#7#8'FormShow'
+  +#10'LCLVersion'#6#8'0.9.28.2'#0#6'TLabel'#6'Label1'#4'Left'#2#7#6'Height'#2
+  +#14#3'Top'#2'W'#5'Width'#3#135#0#7'Caption'#6#27'Mean of the Null Hypothesis'
+  +#11'ParentColor'#8#0#0#6'TLabel'#6'Label2'#4'Left'#2#7#6'Height'#2#14#3'Top'
+  +#2'w'#5'Width'#3#171#0#7'Caption'#6'"Mean of the Alternative Hypothesis'#11
+  +'ParentColor'#8#0#0#6'TLabel'#6'Label3'#4'Left'#2#7#6'Height'#2#14#3'Top'#3
+  +#151#0#5'Width'#3#182#0#7'Caption'#6'&Standard Deviation of the Distribution'
+  +#11'ParentColor'#8#0#0#6'TLabel'#6'Label4'#4'Left'#2#7#6'Height'#2#14#3'Top'
+  +#3#184#0#5'Width'#3#170#0#7'Caption'#6'$Probability of Making a Type I Error'
+  +#11'ParentColor'#8#0#0#6'TLabel'#6'Label5'#4'Left'#2#7#6'Height'#2#14#3'Top'
+  +#3#216#0#5'Width'#3#174#0#7'Caption'#6'%Probability of Making a Type II Erro'
+  +'r'#11'ParentColor'#8#0#0#5'TEdit'#12'NullMeanEdit'#4'Left'#3#198#0#6'Height'
+  +#2#21#3'Top'#2'P'#5'Width'#2'<'#8'TabOrder'#2#0#4'Text'#6#12'NullMeanEdit'#0
+  +#0#5'TEdit'#11'AltMeanEdit'#4'Left'#3#198#0#6'Height'#2#21#3'Top'#2'p'#5'Wid'
+  +'th'#2'<'#8'TabOrder'#2#1#4'Text'#6#5'Edit1'#0#0#5'TEdit'#6'SDEdit'#4'Left'#3
+  +#198#0#6'Height'#2#21#3'Top'#3#144#0#5'Width'#2'<'#8'TabOrder'#2#2#4'Text'#6
+  +#5'Edit1'#0#0#5'TEdit'#9'TypeIEdit'#4'Left'#3#198#0#6'Height'#2#21#3'Top'#3
+  +#176#0#5'Width'#2'<'#8'TabOrder'#2#3#4'Text'#6#5'Edit1'#0#0#5'TEdit'#10'Type'
+  +'IIEdit'#4'Left'#3#198#0#6'Height'#2#21#3'Top'#3#208#0#5'Width'#2'<'#8'TabOr'
+  +'der'#2#4#4'Text'#6#5'Edit1'#0#0#7'TButton'#8'ResetBtn'#4'Left'#3' '#1#6'Hei'
+  +'ght'#2#29#3'Top'#2'H'#5'Width'#2'F'#7'Caption'#6#5'Reset'#7'OnClick'#7#13'R'
+  +'esetBtnClick'#8'TabOrder'#2#5#0#0#7'TButton'#9'CancelBtn'#4'Left'#3' '#1#6
+  +'Height'#2#29#3'Top'#2#9#5'Width'#2'F'#7'Caption'#6#6'Cancel'#11'ModalResult'
+  +#2#2#8'TabOrder'#2#6#0#0#7'TButton'#10'ComputeBtn'#4'Left'#3' '#1#6'Height'#2
+  +#29#3'Top'#3#136#0#5'Width'#2'F'#7'Caption'#6#7'Compute'#7'OnClick'#7#15'Com'
+  +'puteBtnClick'#8'TabOrder'#2#7#0#0#7'TButton'#9'ReturnBtn'#4'Left'#3' '#1#6
+  +'Height'#2#29#3'Top'#3#200#0#5'Width'#2'F'#7'Caption'#6#6'Return'#11'ModalRe'
+  +'sult'#2#1#8'TabOrder'#2#8#0#0#11'TRadioGroup'#8'NullType'#4'Left'#2#8#6'Hei'
+  +'ght'#2'C'#3'Top'#2#0#5'Width'#3#252#0#8'AutoFill'#9#7'Caption'#6#31'Null Hy'
+  +'pothesis Characteristic:'#28'ChildSizing.LeftRightSpacing'#2#6#28'ChildSizi'
+  +'ng.TopBottomSpacing'#2#6#29'ChildSizing.EnlargeHorizontal'#7#24'crsHomogeno'
+  +'usChildResize'#27'ChildSizing.EnlargeVertical'#7#24'crsHomogenousChildResiz'
+  +'e'#28'ChildSizing.ShrinkHorizontal'#7#14'crsScaleChilds'#26'ChildSizing.Shr'
+  +'inkVertical'#7#14'crsScaleChilds'#18'ChildSizing.Layout'#7#29'cclLeftToRigh'
+  +'tThenTopToBottom'#27'ChildSizing.ControlsPerLine'#2#1#12'ClientHeight'#2'1'
+  +#11'ClientWidth'#3#248#0#9'ItemIndex'#2#1#13'Items.Strings'#1#6'#One-tailed '
+  +'(Directional alterntive)'#6'''Two-tailed (non-directional alterntive)'#0#8
+  +'TabOrder'#2#9#0#0#0
+]);
--- a/applications/lazstats/source_orig/ESSAYUNIT.PAS
+++ b/applications/lazstats/source_orig/ESSAYUNIT.PAS
@ -0,0 +1,420 @@
+unit EssayUnit;
+
+{$MODE Delphi}
+
+interface
+
+uses
+  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
+  StdCtrls, ExtCtrls, ItemBankGlobals, ExtDlgs, FunctionsUnit;
+
+type
+  TEssayFrm = class(TForm)
+    Label2: TLabel;
+    ItemNoEdit: TEdit;
+    ItemNoScroll: TScrollBar;
+    Label1: TLabel;
+    CodeCombo: TComboBox;
+    Label14: TLabel;
+    BMPFileEdit: TEdit;
+    Label15: TLabel;
+    BrowseBtn: TButton;
+    ClearBtn: TButton;
+    Label16: TLabel;
+    BMPImage: TImage;
+    Label18: TLabel;
+    ItemWeightEdit: TEdit;
+    Panel1: TPanel;
+    Label9: TLabel;
+    Label10: TLabel;
+    Label11: TLabel;
+    Label12: TLabel;
+    Label13: TLabel;
+    PcntEdit: TEdit;
+    IRT1Edit: TEdit;
+    IRT2Edit: TEdit;
+    IRT3Edit: TEdit;
+    NoSelEdit: TEdit;
+    Label3: TLabel;
+    StemMemo: TMemo;
+    NewBtn: TButton;
+    SaveBtn: TButton;
+    DeleteBtn: TButton;
+    ReturnBtn: TButton;
+    AnswerMemo: TMemo;
+    Label4: TLabel;
+    OpenPictureDialog1: TOpenPictureDialog;
+    Label5: TLabel;
+    SymbolBox: TListBox;
+    Label6: TLabel;
+    OpenDialog1: TOpenDialog;
+    procedure FormShow(Sender: TObject);
+    procedure ShowEssayItem(Sender: TObject; itemno : integer);
+    procedure ReturnBtnClick(Sender: TObject);
+    procedure NewBtnClick(Sender: TObject);
+    procedure SaveBtnClick(Sender: TObject);
+    procedure LoadRecord(VAR NewRcd : EssayItemRcd; Sender : TObject);
+    procedure DeleteBtnClick(Sender: TObject);
+    procedure BrowseBtnClick(Sender: TObject);
+    procedure ItemNoScrollScroll(Sender: TObject; ScrollCode: TScrollCode;
+      var ScrollPos: Integer);
+    procedure ClearBtnClick(Sender: TObject);
+    procedure SymbolBoxClick(Sender: TObject);
+    procedure StemMemoEnter(Sender: TObject);
+    procedure AnswerMemoEnter(Sender: TObject);
+  private
+    { Private declarations }
+    maxitems : integer;
+    ARcd : EssayItemRcd;
+    symbol : char;
+    EditBox : integer;
+  public
+    { Public declarations }
+  end;
+
+var
+  EssayFrm: TEssayFrm;
+
+implementation
+
+{$R *.lfm}
+
+procedure TEssayFrm.FormShow(Sender: TObject);
+var
+   F : TextFile;
+   S  : string;
+   TF : File of EssayItemRcd;
+   i : integer;
+begin
+      StemMemo.Clear;
+      AnswerMemo.Clear;
+      ItemNoScroll.Min := 1;
+      ItemNoScroll.Max := 1;
+      ItemNoEdit.Text := '1';
+      ItemNoScroll.Position := 1;
+      CodeCombo.Text := '';
+      BMPFileEdit.Text := '';
+      PcntEdit.Text := '0';
+      IRT1Edit.Text := '0';
+      IRT2Edit.Text := '0';
+      IRT3Edit.Text := '0';
+      NoSelEdit.Text := '0';
+      ItemWeightEdit.Text := '0';
+      maxitems := 0;
+     OpenDialog1.DefaultExt := '.COD';
+     OpenDialog1.Filter := 'Code files (*.cod)|*.COD|Text files (*.txt)|*.TXT|All files (*.*)|*.*';
+     OpenDialog1.FilterIndex := 1;
+     OpenDialog1.FileName := BankPath + ExtractFileName(BankName) + '.COD';
+     OpenDialog1.Title := 'Name of Item Code File:';
+     if OpenDialog1.Execute then
+     begin
+           AssignFile(F,OpenDialog1.filename);
+           ReSet(F);
+           while not EOF(F) do
+           begin
+                readln(F,S);
+                CodeCombo.Items.Add(S);
+           end;
+      end
+      else begin
+           ShowMessage('You must first open a file of item codes.');
+           exit;
+      end;
+      CloseFile(F);
+      S := BankPath + 'EssayFile' + ExtractFileName(BankName);
+      EssayFName := S;
+      if FileExists(S) { *Converted from FileExists*  } then
+      begin
+           AssignFile(TF,S);
+           Reset(TF);
+           while not EOF(TF) do
+           begin
+                read(TF,EssayItem);
+                maxitems := maxitems + 1;
+           end;
+           CloseFile(TF);
+           if maxitems > ItemNoScroll.Max then
+                ItemNoScroll.Max := maxitems;
+           ItemNoScroll.Min := 1;
+      end
+      else begin // create empty file
+           AssignFile(TF,S);
+           rewrite(TF);
+           CloseFile(TF);
+      end;
+      for i := 1 to 20 do ARcd.BestAns[i] := '';
+      if maxitems > 0 then
+      begin
+           ItemNoScroll.Position := 1;
+           ShowEssayItem(self,1);
+      end;
+      SymbolBox.Clear;
+      for i := 127 to 255 do SymbolBox.Items.Add(chr(ord(i)));
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.ShowEssayItem(Sender: TObject; itemno : integer);
+var
+   S : string;
+   F : File of EssayItemRcd;
+   where : longint;
+   Frecd : EssayItemRcd;
+   i : integer;
+
+begin
+     ItemNoEdit.Text := IntToStr(ItemNoScroll.Position);
+     S := BankPath + 'EssayFile' + ExtractFileName(BankName);
+     AssignFile(F,S);
+     Reset(F);
+     where := itemno-1;
+     Seek(F,where);
+     read(F,FRecd);
+     CloseFile(F);
+     CodeCombo.Text := Frecd.Code;
+     BMPFileEdit.Text := Frecd.Picture;
+     PcntEdit.Text := FloatToStr(Frecd.PcntPass);
+     if BMPFileEdit.Text <> '' then
+     begin
+        if FileExists(Frecd.Picture) { *Converted from FileExists*  } then
+        begin
+             BMPImage.Picture.LoadFromFile(Frecd.Picture);
+             BMPImage.Visible := true;
+        end
+        else begin
+//             ShowMessage('Image ' + Frecd.Picture + ' not found.');
+             BMPFileEdit.Text := '';
+             Frecd.Picture := '';
+        end;
+     end
+     else BMPImage.Visible := false;
+     ItemWeightEdit.Text := IntToStr(Frecd.ItemWeight);
+     IRT1Edit.Text := FloatToStr(Frecd.IRT[1]);
+     IRT2Edit.Text := FloatToStr(Frecd.IRT[2]);
+     IRT3Edit.Text := FLoatToStr(Frecd.IRT[3]);
+     StemMemo.Clear;
+     for i := 1 to 20 do
+     begin
+          S := Frecd.ItemStem[i];
+          if length(S) > 0 then StemMemo.Lines.Add(S);
+     end;
+     AnswerMemo.Clear;
+     for i := 1 to 20 do
+     begin
+          S := Frecd.BestAns[i];
+          if length(S) > 0 then AnswerMemo.Lines.Add(S);
+     end;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.ReturnBtnClick(Sender: TObject);
+begin
+     EssayFrm.Hide;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.NewBtnClick(Sender: TObject);
+begin
+      StemMemo.Clear;
+      AnswerMemo.Clear;
+      ItemNoScroll.Max := maxitems + 1;
+      ItemNoScroll.Position := ItemNoScroll.Max;
+      ItemNoEdit.Text := IntToStr(ItemNoScroll.Position);
+      CodeCombo.Text := '';
+      BMPFileEdit.Text := '';
+      BMPImage.Visible := false;
+      PcntEdit.Text := '0';
+      IRT1Edit.Text := '0';
+      IRT2Edit.Text := '0';
+      IRT3Edit.Text := '0';
+      NoSelEdit.Text := '0';
+      ItemWeightEdit.Text := '0';
+      BMPImage.Visible := false;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.SaveBtnClick(Sender: TObject);
+var
+   NewRcd : EssayItemRcd;
+   itemno : integer;
+
+begin
+     itemno := ItemNoScroll.Position;
+     LoadRecord(NewRcd,self);
+     WriteESItem(itemno,NewRcd);
+     if itemno > maxitems then
+     begin
+          maxitems := itemno;
+          ItemNoScroll.Max := maxitems+1;
+     end;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.LoadRecord(VAR NewRcd : EssayItemRcd; Sender : TObject);
+var
+   i : integer;
+   S : string;
+begin
+     NewRcd.ItemNo := ItemNoScroll.Position;
+     NewRcd.Code := CodeCombo.Text;
+     for i := 0 to StemMemo.Lines.Count-1 do
+     begin
+          S := Trim(StemMemo.Lines[i]);
+          NewRcd.ItemStem[i+1] := S;
+     end;
+     if StemMemo.Lines.Count < 20 then
+          for i := StemMemo.Lines.Count+1 to 20 do NewRcd.ItemStem[i] := '';
+     for i := 0 to AnswerMemo.Lines.Count-1 do
+     begin
+          S := Trim(AnswerMemo.Lines[i]);
+          NewRcd.BestAns[i+1] := S;
+     end;
+     if AnswerMemo.Lines.Count < 20 then
+        for i := AnswerMemo.Lines.Count+1 to 20 do NewRcd.BestAns[i] := '';
+     NewRcd.ItemWeight := StrToInt(ItemWeightEdit.Text);
+     NewRcd.Picture := BMPFileEdit.Text;
+     NewRcd.PcntPass := StrToFloat(PcntEdit.Text);
+     NewRcd.IRT[1] := StrToFloat(IRT1Edit.Text);
+     NewRcd.IRT[2] := StrToFloat(IRT2Edit.Text);
+     NewRcd.IRT[3] := StrToFloat(IRT3Edit.Text);
+     NewRcd.FreqElect := StrToInt(NoSelEdit.Text);
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.DeleteBtnClick(Sender: TObject);
+var
+   FOld : File of EssayItemRcd;
+   FNew : File of EssayItemRcd;
+   itemno : integer;
+   i : integer;
+   SOld : string;
+   SNew : string;
+
+begin
+     itemno := ItemNoScroll.Position;
+     SOld := BankPath + 'EssayFile' + ExtractFileName(BankName);
+     AssignFile(FOld,SOld);
+     ReSet(FOld);
+     SNew := BankPath + 'TempEssayFile';
+     AssignFile(FNew,SNew);
+     Rewrite(FNew);
+     // copy up to itemno from old file to new file
+     for i := 1 to itemno-1 do
+     begin
+          if not EOF(FOld) then
+          begin
+               read(FOld,ARcd);
+               write(FNew,ARcd);
+          end;
+     end;
+     // read past itemno to delete
+     if not EOF(FOld) then read(FOld,ARcd);
+     // write remaining records, if any, from old to new
+     if not EOF(FOld) then
+     begin
+          while not EOF(FOld) do
+          begin
+               read(FOld,ARcd);
+               write(FNew,ARcd);
+          end;
+     end;
+     CloseFile(FOld);
+     CloseFile(FNew);
+     // delete old file and rename temp file to old file name
+     DeleteFile(SOld); { *Converted from DeleteFile*  }
+     RenameFile(SNew, Sold); { *Converted from RenameFile*  }
+     maxitems := maxitems - 1;
+     if maxitems > 0 then ItemNoScroll.Max := maxitems else
+        ItemNoScroll.Max := 1;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.BrowseBtnClick(Sender: TObject);
+begin
+     if OpenPictureDialog1.Execute then
+     begin
+          BMPFileEdit.Text := OpenPictureDialog1.FileName;
+          BMPImage.Picture.LoadFromFile(BMPFileEdit.Text);
+          BMPImage.Visible := true;
+     end;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.ItemNoScrollScroll(Sender: TObject;
+  ScrollCode: TScrollCode; var ScrollPos: Integer);
+var
+   itemno : integer;
+begin
+     itemno := ScrollPos;
+     if (itemno > maxitems) or (itemno < 1) then exit;
+     ItemNoEdit.Text := IntToStr(itemno);
+     ShowEssayItem(self,itemno);
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.ClearBtnClick(Sender: TObject);
+begin
+     BMPFileEdit.Text := '';
+     BMPImage.Visible := false;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.SymbolBoxClick(Sender: TObject);
+var
+   index : integer;
+   S : string;
+begin
+     if EditBox = 1 then
+     begin
+          index := SymbolBox.ItemIndex;
+          S := SymbolBox.Items.Strings[index];
+          symbol := S[1];
+          index := StemMemo.Lines.Count;
+          if index > 0 then
+          begin
+               S := StemMemo.Lines.Strings[index-1];
+               StemMemo.Lines.Delete(index-1);
+               S := S + symbol;
+               StemMemo.Lines.Insert(index-1,S);
+          end
+          else begin
+               S := StemMemo.Lines.Strings[0];
+               StemMemo.Lines.Delete(0);
+               S := S + symbol;
+               StemMemo.Lines.Add(S);
+          end;
+     end
+     else begin
+          index := SymbolBox.ItemIndex;
+          S := SymbolBox.Items.Strings[index];
+          symbol := S[1];
+          index := AnswerMemo.Lines.Count;
+          if index > 0 then
+          begin
+               S := AnswerMemo.Lines.Strings[index-1];
+               AnswerMemo.Lines.Delete(index-1);
+               S := S + symbol;
+               AnswerMemo.Lines.Insert(index-1,S);
+          end
+          else begin
+               S := AnswerMemo.Lines.Strings[0];
+               AnswerMemo.Lines.Delete(0);
+               S := S + symbol;
+               AnswerMemo.Lines.Add(S);
+          end;
+     end;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.StemMemoEnter(Sender: TObject);
+begin
+     EditBox := 1;
+end;
+//-------------------------------------------------------------------
+
+procedure TEssayFrm.AnswerMemoEnter(Sender: TObject);
+begin
+     EditBox := 2;
+end;
+//-------------------------------------------------------------------
+
+end.
--- a/applications/lazstats/source_orig/ESSAYUNIT.lfm
+++ b/applications/lazstats/source_orig/ESSAYUNIT.lfm
@ -0,0 +1,329 @@
+object EssayFrm: TEssayFrm
+  Left = 23
+  Top = 10
+  HelpContext = 1855
+  BorderStyle = bsDialog
+  Caption = 'Essay Item Specification'
+  ClientHeight = 479
+  ClientWidth = 658
+  Color = clBtnFace
+  Font.Charset = DEFAULT_CHARSET
+  Font.Color = clWindowText
+  Font.Height = -11
+  Font.Name = 'MS Sans Serif'
+  Font.Style = []
+  HelpFile = 'ITEMBANKHELP.HLP'
+  OnShow = FormShow
+  PixelsPerInch = 96
+  object Label2: TLabel
+    Left = 16
+    Top = 8
+    Width = 63
+    Height = 13
+    Caption = 'Item Number:'
+  end
+  object Label1: TLabel
+    Left = 160
+    Top = 8
+    Width = 281
+    Height = 13
+    Caption = 'Click on the Item Classification Code listed in the box below.'
+  end
+  object Label14: TLabel
+    Left = 16
+    Top = 64
+    Width = 89
+    Height = 13
+    Caption = 'Bit Map File Name:'
+  end
+  object Label15: TLabel
+    Left = 16
+    Top = 88
+    Width = 72
+    Height = 13
+    Caption = 'Image (if used):'
+  end
+  object Label16: TLabel
+    Left = 120
+    Top = 80
+    Width = 97
+    Height = 13
+    Caption = '(Thumb Nail Sketch)'
+  end
+  object BMPImage: TImage
+    Left = 112
+    Top = 96
+    Width = 121
+    Height = 97
+    Center = True
+    Stretch = True
+  end
+  object Label18: TLabel
+    Left = 248
+    Top = 96
+    Width = 60
+    Height = 13
+    Caption = 'Item Weight:'
+  end
+  object Label3: TLabel
+    Left = 16
+    Top = 208
+    Width = 47
+    Height = 13
+    Caption = 'Item Stem'
+  end
+  object Label4: TLabel
+    Left = 16
+    Top = 328
+    Width = 92
+    Height = 13
+    Caption = 'Suggested Answer:'
+  end
+  object Label5: TLabel
+    Left = 600
+    Top = 8
+    Width = 39
+    Height = 13
+    Caption = 'Symbols'
+  end
+  object Label6: TLabel
+    Left = 584
+    Top = 24
+    Width = 68
+    Height = 13
+    Caption = 'Click to Select'
+  end
+  object ItemNoEdit: TEdit
+    Left = 104
+    Top = 0
+    Width = 41
+    Height = 21
+    TabOrder = 0
+  end
+  object ItemNoScroll: TScrollBar
+    Left = 16
+    Top = 28
+    Width = 129
+    Height = 16
+    Max = 1000
+    PageSize = 0
+    TabOrder = 1
+    OnScroll = ItemNoScrollScroll
+  end
+  object CodeCombo: TComboBox
+    Left = 160
+    Top = 24
+    Width = 417
+    Height = 21
+    ItemHeight = 13
+    TabOrder = 2
+    Text = 'Classification Code'
+  end
+  object BMPFileEdit: TEdit
+    Left = 112
+    Top = 56
+    Width = 465
+    Height = 21
+    TabOrder = 3
+    Text = 'BMPFileEdit'
+  end
+  object BrowseBtn: TButton
+    Left = 24
+    Top = 112
+    Width = 57
+    Height = 25
+    Caption = 'Browse'
+    TabOrder = 4
+    OnClick = BrowseBtnClick
+  end
+  object ClearBtn: TButton
+    Left = 24
+    Top = 144
+    Width = 57
+    Height = 25
+    Caption = 'Clear'
+    TabOrder = 5
+    OnClick = ClearBtnClick
+  end
+  object ItemWeightEdit: TEdit
+    Left = 312
+    Top = 96
+    Width = 33
+    Height = 21
+    TabOrder = 6
+    Text = 'ItemWeightEdit'
+  end
+  object Panel1: TPanel
+    Left = 408
+    Top = 80
+    Width = 169
+    Height = 137
+    TabOrder = 7
+    object Label9: TLabel
+      Left = 6
+      Top = 14
+      Width = 78
+      Height = 13
+      Caption = 'Percent Passed:'
+    end
+    object Label10: TLabel
+      Left = 6
+      Top = 38
+      Width = 97
+      Height = 13
+      Caption = 'Log Difficulty (IRT1):'
+    end
+    object Label11: TLabel
+      Left = 6
+      Top = 62
+      Width = 86
+      Height = 13
+      Caption = 'Item Slope (IRT2):'
+    end
+    object Label12: TLabel
+      Left = 6
+      Top = 86
+      Width = 96
+      Height = 13
+      Caption = 'Item Chance (IRT3):'
+    end
+    object Label13: TLabel
+      Left = 6
+      Top = 110
+      Width = 76
+      Height = 13
+      Caption = 'Times Selected:'
+    end
+    object PcntEdit: TEdit
+      Left = 110
+      Top = 6
+      Width = 41
+      Height = 21
+      TabOrder = 0
+    end
+    object IRT1Edit: TEdit
+      Left = 110
+      Top = 30
+      Width = 41
+      Height = 21
+      TabOrder = 1
+    end
+    object IRT2Edit: TEdit
+      Left = 110
+      Top = 54
+      Width = 41
+      Height = 21
+      TabOrder = 2
+    end
+    object IRT3Edit: TEdit
+      Left = 110
+      Top = 78
+      Width = 41
+      Height = 21
+      TabOrder = 3
+    end
+    object NoSelEdit: TEdit
+      Left = 110
+      Top = 102
+      Width = 41
+      Height = 21
+      TabOrder = 4
+    end
+  end
+  object StemMemo: TMemo
+    Left = 16
+    Top = 224
+    Width = 561
+    Height = 97
+    Font.Charset = GREEK_CHARSET
+    Font.Color = clWindowText
+    Font.Height = -16
+    Font.Name = 'Times New Roman'
+    Font.Style = []
+    MaxLength = 1000
+    ParentFont = False
+    ScrollBars = ssVertical
+    TabOrder = 8
+    WantTabs = True
+    WordWrap = False
+    OnEnter = StemMemoEnter
+  end
+  object NewBtn: TButton
+    Left = 16
+    Top = 443
+    Width = 73
+    Height = 25
+    Caption = 'New Item'
+    TabOrder = 9
+    OnClick = NewBtnClick
+  end
+  object SaveBtn: TButton
+    Left = 104
+    Top = 443
+    Width = 73
+    Height = 25
+    Caption = 'Save Item'
+    TabOrder = 10
+    OnClick = SaveBtnClick
+  end
+  object DeleteBtn: TButton
+    Left = 192
+    Top = 443
+    Width = 73
+    Height = 25
+    Caption = 'Delete'
+    TabOrder = 11
+    OnClick = DeleteBtnClick
+  end
+  object ReturnBtn: TButton
+    Left = 496
+    Top = 443
+    Width = 73
+    Height = 25
+    Caption = 'Return'
+    ModalResult = 1
+    TabOrder = 12
+    OnClick = ReturnBtnClick
+  end
+  object AnswerMemo: TMemo
+    Left = 16
+    Top = 344
+    Width = 553
+    Height = 89
+    Font.Charset = GREEK_CHARSET
+    Font.Color = clWindowText
+    Font.Height = -16
+    Font.Name = 'Times New Roman'
+    Font.Style = []
+    Lines.Strings = (
+      '')
+    MaxLength = 1000
+    ParentFont = False
+    TabOrder = 13
+    WantTabs = True
+    OnEnter = AnswerMemoEnter
+  end
+  object SymbolBox: TListBox
+    Left = 592
+    Top = 40
+    Width = 49
+    Height = 425
+    Font.Charset = GREEK_CHARSET
+    Font.Color = clWindowText
+    Font.Height = -16
+    Font.Name = 'Times New Roman'
+    Font.Style = []
+    ItemHeight = 19
+    ParentFont = False
+    TabOrder = 14
+    OnClick = SymbolBoxClick
+  end
+  object OpenPictureDialog1: TOpenPictureDialog
+    Left = 304
+    Top = 440
+  end
+  object OpenDialog1: TOpenDialog
+    Left = 344
+    Top = 440
+  end
+end
--- a/applications/lazstats/source_orig/EXACTUNIT.PAS
+++ b/applications/lazstats/source_orig/EXACTUNIT.PAS
@ -0,0 +1,456 @@
+unit ExactUnit;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  ExtCtrls, StdCtrls, Buttons, MainUnit, OutPutUnit, FunctionsLib,
+  Globals, DataProcs, Math;
+
+type
+
+  { TFisherFrm }
+
+  TFisherFrm = class(TForm)
+    ResetBtn: TButton;
+    CancelBtn: TButton;
+    ComputeBtn: TButton;
+    ReturnBtn: TButton;
+    RC11Edit: TEdit;
+    RC12Edit: TEdit;
+    RC21Edit: TEdit;
+    RC22Edit: TEdit;
+    Label6: TLabel;
+    Label7: TLabel;
+    Label8: TLabel;
+    Label9: TLabel;
+    NCasesEdit: TEdit;
+    NCasesLabel: TLabel;
+    Panel2: TPanel;
+    RowIn: TBitBtn;
+    RowOut: TBitBtn;
+    ColIn: TBitBtn;
+    ColOut: TBitBtn;
+    DepIn: TBitBtn;
+    DepOut: TBitBtn;
+    ColEdit: TEdit;
+    DepEdit: TEdit;
+    RowEdit: TEdit;
+    InputGrp: TRadioGroup;
+    Label1: TLabel;
+    Label2: TLabel;
+    Label3: TLabel;
+    Label4: TLabel;
+    VarList: TListBox;
+    Panel1: TPanel;
+    procedure ColInClick(Sender: TObject);
+    procedure ColOutClick(Sender: TObject);
+    procedure ComputeBtnClick(Sender: TObject);
+    procedure DepInClick(Sender: TObject);
+    procedure DepOutClick(Sender: TObject);
+    procedure FormShow(Sender: TObject);
+    procedure InputGrpClick(Sender: TObject);
+    procedure RC11EditKeyPress(Sender: TObject; var Key: char);
+    procedure RC12EditKeyPress(Sender: TObject; var Key: char);
+    procedure RC21EditKeyPress(Sender: TObject; var Key: char);
+    procedure RC22EditKeyPress(Sender: TObject; var Key: char);
+    procedure ResetBtnClick(Sender: TObject);
+    procedure RowInClick(Sender: TObject);
+    procedure RowOutClick(Sender: TObject);
+  private
+    { private declarations }
+    procedure FisherTable(A, b, C, d : integer; p, SumP : double);
+  public
+    { public declarations }
+  end; 
+
+var
+  FisherFrm: TFisherFrm;
+
+implementation
+
+{ TFisherFrm }
+
+procedure TFisherFrm.ResetBtnClick(Sender: TObject);
+VAR i : integer;
+begin
+     VarList.Clear;
+     RowEdit.Text := '';
+     ColEdit.Text := '';
+     DepEdit.Text := '';
+     DepEdit.Visible := false;
+     RowIn.Visible := true;
+     RowOut.Visible := false;
+     ColIn.Visible := false;
+     ColOut.Visible := false;
+     DepIn.Visible := false;
+     DepOut.Visible := false;
+     NCasesLabel.Visible := false;
+     Label4.Visible := false;
+     NCasesEdit.Text := '';
+     NCasesEdit.Visible := false;
+     for i := 1 to NoVariables do
+         VarList.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]);
+     Panel1.Visible := false;
+     Panel2.Visible := false;
+     RC11Edit.Text := '';
+     RC12Edit.Text := '';
+     RC21Edit.Text := '';
+     RC22Edit.Text := '';
+end;
+
+procedure TFisherFrm.RowInClick(Sender: TObject);
+VAR index : integer;
+begin
+     index := VarList.ItemIndex;
+     RowEdit.Text := VarList.Items.Strings[index];
+     VarList.Items.Delete(index);
+     RowIn.Visible := false;
+     RowOut.Visible := true;
+end;
+
+procedure TFisherFrm.RowOutClick(Sender: TObject);
+begin
+     VarList.Items.Add(RowEdit.Text);
+     RowEdit.Text := '';
+     RowIn.Visible := true;
+     RowOut.Visible := false;
+end;
+
+procedure TFisherFrm.FormShow(Sender: TObject);
+begin
+     ResetBtnClick(self);
+end;
+
+procedure TFisherFrm.ColInClick(Sender: TObject);
+VAR index : integer;
+begin
+     index := VarList.ItemIndex;
+     ColEdit.Text := VarList.Items.Strings[index];
+     VarList.Items.Delete(index);
+     ColIn.Visible := false;
+     ColOut.Visible := true;
+end;
+
+procedure TFisherFrm.ColOutClick(Sender: TObject);
+begin
+     VarList.Items.Add(ColEdit.Text);
+     ColEdit.Text := '';
+     ColIn.Visible := true;
+     ColOut.Visible := false;
+end;
+
+procedure TFisherFrm.ComputeBtnClick(Sender: TObject);
+var
+   i, j, row, col, caserow, casecol, A, b, C, d, Largest : integer;
+   N, APlusB, APlusC, BPlusD, CPlusD, NoSelected, dep : integer;
+   FirstP, p, SumProb, Tocher, Alpha, X : double;
+   obs : array[1..2,1..2] of integer;
+   ColNoSelected : IntDyneVec;
+   done : boolean;
+   cellstring, outline, response : string;
+begin
+    Randomize; // initialize random number generator
+    row := 0;
+    col := 0;
+    dep := 0;
+
+    // get column no.s of row and col variables
+    if InputGrp.ItemIndex <> 3 then
+    begin
+         for i := 1 to NoVariables do
+         begin
+              cellstring := RowEdit.Text;
+              if cellstring = OS3MainFrm.DataGrid.Cells[i,0] then row := i;
+              cellstring := ColEdit.Text;
+              if cellstring = OS3MainFrm.DataGrid.Cells[i,0] then col := i;
+              if InputGrp.ItemIndex = 2 then
+              begin
+                   cellstring := DepEdit.Text;
+                   if cellstring = OS3MainFrm.DataGrid.Cells[i,0] then dep := i;
+              end;
+         end;
+    end;
+    SetLength(ColNoSelected,3);
+    ColNoSelected[0] := row;
+    ColNoSelected[1] := col;
+    if InputGrp.ItemIndex = 2 then
+    begin
+         ColNoSelected[2] := dep;
+         NoSelected := 3;
+    end
+    else NoSelected := 2;
+
+    //initialize observed matrix
+    for i := 1 to 2 do
+        for j := 1 to 2 do obs[i,j] := 0;
+
+    if InputGrp.ItemIndex = 3 then // get freq. from form
+    begin
+         obs[1,1] := StrToInt(RC11Edit.Text);
+         obs[1,2] := StrToInt(RC12Edit.Text);
+         obs[2,1] := StrToInt(RC21Edit.Text);
+         obs[2,2] := StrToInt(RC22Edit.Text);
+    end;
+
+    if InputGrp.ItemIndex = 0 then // count no. in row/col combinations
+    begin
+         for j := 1 to NoCases do
+         begin
+              if (not GoodRecord(j,NoSelected,ColNoSelected)) then continue;
+              caserow := round(StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[row,j])));
+              casecol := round(StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[col,j])));
+              if (caserow > 2) or (caserow < 1) then
+              begin
+                   ShowMessage('ERROR! Row < 1 or > 2 found. Case ignored.');
+                   continue;
+              end;
+              if (casecol > 2) or (casecol < 1) then
+              begin
+                   ShowMessage('ERROR! Column < 1 or > 2 found. Case ignored.');
+                   continue;
+              end;
+              obs[caserow,casecol] := obs[caserow,casecol] + 1;
+         end;
+    end;
+
+    if (InputGrp.ItemIndex = 1) or (InputGrp.ItemIndex = 2) then // Grid has frequencies for row/col
+    begin
+         for j := 1 to NoCases do
+         begin
+              if (not GoodRecord(j,NoSelected,ColNoSelected)) then continue;
+              caserow := round(StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[row,j])));
+              casecol := round(StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[col,j])));
+              if (caserow > 2) or (caserow < 1) then
+              begin
+                   ShowMessage('ERROR! Row < 1 or > 2 found. Case ignored.');
+                   continue;
+              end;
+              if (casecol > 2) or (casecol < 1) then
+              begin
+                   ShowMessage('ERROR! Column < 1 or > 2 found. Case ignored.');
+                   continue;
+              end;
+              obs[caserow,casecol] := round(StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[dep,j])));
+              if InputGrp.ItemIndex = 2 then
+                 obs[caserow,casecol] := obs[caserow,casecol] *
+                     StrToInt(NCasesEdit.Text);
+         end;
+    end;
+
+    //Find smallest value
+    A := obs[1,1];
+    b := obs[1,2];
+    C := obs[2,1];
+    d := obs[2,2];
+    APlusB := A + b;
+    CPlusD := C + d;
+    BPlusD := b + d;
+    APlusC := A + C;
+    N := A + b + C + d;
+    Largest := 1;
+    if (b > A) then largest := 2;
+    if ((b > A) and (b > C) and (b > d)) then Largest := 2;
+    if ((C > A) and (C > b) and (C > d)) then Largest := 3;
+    if ((d > A) and (d > b) and (d > C)) then Largest := 4;
+
+    //Ready output
+    OutPutFrm.RichEdit.Clear;
+    SumProb := 0.0;
+    OutPutFrm.RichEdit.Lines.Add('Fisher Exact Probability Test');
+    OutPutFrm.RichEdit.Lines.Add('');
+
+    //Get first probability
+    FirstP := combos(A, APlusC) * combos(b, BPlusD) / combos(APlusB, N);
+    SumProb := SumProb + FirstP;
+    FisherTable(A, b, C, d, FirstP, SumProb);
+
+    //Get more extreme probabilities
+    done := false;
+    while (not done) do
+    begin
+        case Largest of
+        1: begin// top row, first col
+                if (A = APlusB) then done := true
+                else begin
+                     A := A + 1;
+                     b := b - 1;
+                     C := C - 1;
+                     d := d + 1;
+                end;
+           end;
+        2: begin// top row, second column
+                if (b = APlusB) then done := true
+                else begin
+                     A := A - 1;
+                     b := b + 1;
+                     C := C + 1;
+                     d := d - 1;
+                end;
+           end;
+        3: begin // second row, first column
+                if (C = CPlusD) then done := true
+                else begin
+                     A := A - 1;
+                     b := b + 1;
+                     C := C + 1;
+                     d := d - 1;
+                end;
+           end;
+        4: begin // second row, second column
+                if (d = CPlusD) then done := true
+                else begin
+                     A := A + 1;
+                     b := b - 1;
+                     C := C - 1;
+                     d := d + 1;
+                end;
+           end;
+        end; // end case
+        if (not done) then
+        begin
+            p := combos(A, APlusC) * combos(b, BPlusD) / combos(APlusB, N);
+            SumProb := SumProb + p;
+            FisherTable(A, b, C, d, p, SumProb);
+        end;
+    end;
+
+    //Tocher's modification
+    response :=
+        InputBox( 'ALPHA','Enter your Alpha (Type I Error rate) : ', '0.05');
+    Alpha := StrToFloat(response);
+    if ((SumProb - FirstP) > Alpha) then //Extreme values > alpha - accept null hypothesis
+        OutPutFrm.RichEdit.Lines.Add('Null hypothesis accepted.')
+    else begin//Extreme values significant - is total probability significant?
+        if (SumProb >= Alpha) then//No, so apply Tocher's rule
+        begin
+            Tocher := ( Alpha - (SumProb - FirstP)) / FirstP;
+            X := random(1000) / 1000.0; //Select a random value between 0 and num - 1
+            outline := format('Tocher ratio computed: %5.3f',[Tocher]);
+            OutPutFrm.RichEdit.Lines.Add(outline);
+            if (X < Tocher) then //Call it significant
+            begin
+                outline := format('A random value of %5.3f selected was less than the Tocher value.',[X]);
+                OutPutFrm.RichEdit.Lines.Add(outline);
+                OutPutFrm.RichEdit.Lines.Add('Conclusion: Reject the null Hypothesis');
+            end
+            else begin //Call it non-significant
+                outline := format('A random value of %5.3f selected was greater than the Tocher value.',[X]);
+                OutPutFrm.RichEdit.Lines.Add(outline);
+                OutPutFrm.RichEdit.Lines.Add('Conclusion: Accept the null Hypothesis');
+            end;
+        end
+        else begin //Total probability < alpha - reject null
+            OutPutFrm.RichEdit.Lines.Add('Probability less than alpha - reject null hypothesis.');
+        end; // end if-else
+    end; // end if-else
+    OutPutFrm.ShowModal;
+end;
+
+procedure TFisherFrm.DepInClick(Sender: TObject);
+VAR index : integer;
+begin
+     index := VarList.ItemIndex;
+     DepEdit.Text := VarList.Items.Strings[index];
+     VarList.Items.Delete(index);
+     DepIn.Visible := false;
+     DepOut.Visible := true;
+end;
+
+procedure TFisherFrm.DepOutClick(Sender: TObject);
+begin
+     VarList.Items.Add(DepEdit.Text);
+     DepEdit.Text := '';
+     DepIn.Visible := true;
+     DepOut.Visible := false;
+end;
+
+procedure TFisherFrm.InputGrpClick(Sender: TObject);
+begin
+     if InputGrp.ItemIndex = 3 then
+     begin
+          Panel2.Visible := true;
+          Panel1.Visible := false;
+          RC11Edit.SetFocus;
+          Label4.Visible := false;
+          ColIn.Visible := false;
+          DepIn.Visible := false;
+          DepOut.Visible := false;
+     end
+     else
+     begin
+          Panel1.Visible := true;
+          Panel2.Visible := false;
+          ColIn.Visible := true;
+          ColOut.Visible := false;
+          if InputGrp.ItemIndex = 2 then
+          begin
+               NCasesLabel.Visible := true;
+               NCasesEdit.Visible := true;
+          end
+          else begin
+               NCasesLabel.Visible := false;
+               NCasesEdit.Visible := false;
+          end;
+          if InputGrp.ItemIndex = 0 then
+          begin
+               Label4.Visible := false;
+               DepEdit.Visible := false;
+               DepIn.Visible := false;
+               DepOut.Visible := false;
+          end
+          else begin  // InputGrp = 1
+               Label4.Visible := true;
+               DepEdit.Visible := true;
+               DepIn.Visible := true;
+               DepOut.Visible := true;
+          end;
+     end;
+end;
+
+procedure TFisherFrm.RC11EditKeyPress(Sender: TObject; var Key: char);
+begin
+     if Ord(Key) = 13 then RC12Edit.SetFocus;
+end;
+
+procedure TFisherFrm.RC12EditKeyPress(Sender: TObject; var Key: char);
+begin
+     if Ord(Key) = 13 then RC21Edit.SetFocus;
+end;
+
+procedure TFisherFrm.RC21EditKeyPress(Sender: TObject; var Key: char);
+begin
+     if Ord(Key) = 13 then RC22Edit.SetFocus;
+end;
+
+procedure TFisherFrm.RC22EditKeyPress(Sender: TObject; var Key: char);
+begin
+     if Ord(Key) = 13 then ComputeBtn.SetFocus;
+end;
+
+procedure TFisherFrm.FisherTable(A, b, C, d : integer; p, SumP : double);
+var
+   outline : string;
+begin
+    OutPutFrm.RichEdit.Lines.Add('');
+    OutPutFrm.RichEdit.Lines.Add('Contingency Table for Fisher Exact Test');
+    OutPutFrm.RichEdit.Lines.Add('                 Column');
+    OutPutFrm.RichEdit.Lines.Add('Row             1          2');
+    outline := format(' 1     %10d %10d',[A, b]);
+    OutPutFrm.RichEdit.Lines.Add(outline);
+    outline := format(' 2     %10d %10d',[C, d]);
+    OutPutFrm.RichEdit.Lines.Add(outline);
+    outline := format('Probability := %6.4f',[p]);
+    OutPutFrm.RichEdit.Lines.Add(outline);
+    OutPutFrm.RichEdit.Lines.Add('');
+    outline := format('Cumulative Probability := %6.4f',[SumP]);
+    OutPutFrm.RichEdit.Lines.Add(outline);
+    OutPutFrm.RichEdit.Lines.Add('');
+end;
+initialization
+  {$I exactunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/EXACTUNIT.lfm
+++ b/applications/lazstats/source_orig/EXACTUNIT.lfm
@ -0,0 +1,508 @@
+object FisherFrm: TFisherFrm
+  Left = 171
+  Height = 407
+  Top = 104
+  Width = 553
+  Caption = 'Fisher''s Exact Test for a 2 by 2 Table'
+  ClientHeight = 407
+  ClientWidth = 553
+  OnShow = FormShow
+  LCLVersion = '0.9.26.2'
+  object InputGrp: TRadioGroup
+    Left = 6
+    Height = 95
+    Top = 1
+    Width = 366
+    AutoFill = True
+    Caption = 'Input Options'
+    ChildSizing.LeftRightSpacing = 6
+    ChildSizing.TopBottomSpacing = 6
+    ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
+    ChildSizing.EnlargeVertical = crsHomogenousChildResize
+    ChildSizing.ShrinkHorizontal = crsScaleChilds
+    ChildSizing.ShrinkVertical = crsScaleChilds
+    ChildSizing.Layout = cclLeftToRightThenTopToBottom
+    ChildSizing.ControlsPerLine = 1
+    ClientHeight = 77
+    ClientWidth = 362
+    Items.Strings = (
+      'Count cases classified by row and column vectors in the data grid.'
+      'Use frequencies recorded in the data grid for row and column variables.'
+      'Use proportions recorded in the data grid for row and column variables.'
+      'Enter frequencies on this form.'
+    )
+    OnClick = InputGrpClick
+    TabOrder = 0
+  end
+  object Panel1: TPanel
+    Left = 6
+    Height = 293
+    Top = 103
+    Width = 368
+    ClientHeight = 293
+    ClientWidth = 368
+    TabOrder = 1
+    object Label1: TLabel
+      Left = 8
+      Height = 14
+      Top = 7
+      Width = 90
+      Caption = 'Variables Available'
+      ParentColor = False
+    end
+    object Label2: TLabel
+      Left = 208
+      Height = 14
+      Top = 23
+      Width = 63
+      Caption = 'Row Variable'
+      ParentColor = False
+    end
+    object Label3: TLabel
+      Left = 207
+      Height = 14
+      Top = 103
+      Width = 77
+      Caption = 'Column Variable'
+      ParentColor = False
+    end
+    object Label4: TLabel
+      Left = 207
+      Height = 14
+      Top = 183
+      Width = 93
+      Caption = 'Variable to Analyze'
+      ParentColor = False
+    end
+    object NCasesLabel: TLabel
+      Left = 8
+      Height = 14
+      Top = 265
+      Width = 94
+      Caption = 'Total No. of Cases:'
+      ParentColor = False
+    end
+    object VarList: TListBox
+      Left = 6
+      Height = 226
+      Top = 24
+      Width = 153
+      TabOrder = 0
+    end
+    object RowIn: TBitBtn
+      Left = 170
+      Height = 26
+      Top = 25
+      Width = 29
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+      }
+      NumGlyphs = 0
+      OnClick = RowInClick
+      TabOrder = 1
+    end
+    object RowEdit: TEdit
+      Left = 208
+      Height = 16
+      Top = 40
+      Width = 136
+      TabOrder = 2
+      Text = 'RowEdit'
+    end
+    object ColEdit: TEdit
+      Left = 207
+      Height = 17
+      Top = 120
+      Width = 138
+      TabOrder = 3
+      Text = 'ColEdit'
+    end
+    object DepEdit: TEdit
+      Left = 207
+      Height = 17
+      Top = 199
+      Width = 138
+      TabOrder = 4
+      Text = 'DepEdit'
+    end
+    object NCasesEdit: TEdit
+      Left = 111
+      Height = 18
+      Top = 261
+      Width = 49
+      TabOrder = 5
+      Text = 'NCasesEdit'
+    end
+  end
+  object RowOut: TBitBtn
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+      Left = 7
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+    object Label7: TLabel
+      Left = 7
+      Height = 14
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+      Left = 40
+      Height = 14
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+      ParentColor = False
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+      Left = 88
+      Height = 14
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+      ParentColor = False
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+      Left = 40
+      Height = 21
+      Top = 24
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+      TabOrder = 0
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+    end
+    object RC12Edit: TEdit
+      Left = 87
+      Height = 20
+      Top = 24
+      Width = 43
+      OnKeyPress = RC12EditKeyPress
+      TabOrder = 1
+      Text = 'RC12Edit'
+    end
+    object RC21Edit: TEdit
+      Left = 40
+      Height = 18
+      Top = 55
+      Width = 36
+      OnKeyPress = RC21EditKeyPress
+      TabOrder = 2
+      Text = 'RC21Edit'
+    end
+    object RC22Edit: TEdit
+      Left = 88
+      Height = 16
+      Top = 54
+      Width = 42
+      OnKeyPress = RC22EditKeyPress
+      TabOrder = 3
+      Text = 'RC22Edit'
+    end
+  end
+  object ResetBtn: TButton
+    Left = 424
+    Height = 29
+    Top = 112
+    Width = 83
+    Caption = 'Reset'
+    OnClick = ResetBtnClick
+    TabOrder = 8
+  end
+  object CancelBtn: TButton
+    Left = 424
+    Height = 29
+    Top = 176
+    Width = 83
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 9
+  end
+  object ComputeBtn: TButton
+    Left = 424
+    Height = 29
+    Top = 240
+    Width = 83
+    Caption = 'Compute'
+    OnClick = ComputeBtnClick
+    TabOrder = 10
+  end
+  object ReturnBtn: TButton
+    Left = 424
+    Height = 29
+    Top = 296
+    Width = 83
+    Caption = 'Return'
+    ModalResult = 1
+    TabOrder = 11
+  end
+end
--- a/applications/lazstats/source_orig/EXACTUNIT.lrs
+++ b/applications/lazstats/source_orig/EXACTUNIT.lrs
@ -0,0 +1,372 @@
+{ This is an automatically generated lazarus resource file }
+
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+  +'\'#255'/x5'#209#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
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+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
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+  +'DepInClick'#8'TabOrder'#2#5#0#0#7'TBitBtn'#6'DepOut'#4'Left'#3#176#0#6'Heig'
+  +'ht'#2#26#3'Top'#3'@'#1#5'Width'#2#29#10'Glyph.Data'#10':'#4#0#0'6'#4#0#0'BM'
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+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +'M'#161'V'#6'G'#153'O'#184#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0'S'#169
+  +'\'#217'M'#161'V'#247'G'#153'O8'#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0']'#184'h'#207'q'#190'{'
+  +#255'z'#193#131#255'['#170'd'#255'G'#153'O'#255'A'#145'I'#255';'#136'B'#255
+  +'5'#128';'#255'/x5'#255'*p/'#255'%i)'#255'!c$'#255#29'^ '#255#255#255#255#0
+  +#255#255#255#0'e'#195'q'#196'{'#200#134#255#156#213#165#255#152#211#161#255
+  +#148#208#157#255#144#206#152#255#139#203#147#255#135#201#142#255#130#198#137
+  +#255'~'#195#132#255'z'#193#128#255'v'#190'|'#255'r'#189'x'#255'!c$'#255#255
+  +#255#255#0#255#255#255#0'h'#199't'#201''#204#138#255#162#216#171#255#158#214
+  +#167#255#154#212#163#255#150#210#159#255#147#207#154#255#142#204#149#255#137
+  ,#202#144#255#133#199#139#255#129#197#135#255'}'#194#130#255'x'#192'~'#255'%i'
+  +')'#255#255#255#255#0#255#255#255#0#255#255#255#0'h'#199't'#209#128#205#139
+  +#255'|'#201#135#255']'#184'h'#255'X'#177'b'#255'S'#169'\'#255'M'#161'V'#255
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+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
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+  +#187#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#9'NumGlyphs'#2#0#7'OnClick'#7#11'DepOutClick'#8'TabOrder'#2#6#0#0
+  +#6'TPanel'#6'Panel2'#4'Left'#3#128#1#6'Height'#2'X'#3'Top'#2#8#5'Width'#3#158
+  +#0#12'ClientHeight'#2'X'#11'ClientWidth'#3#158#0#8'TabOrder'#2#7#0#6'TLabel'
+  +#6'Label6'#4'Left'#2#7#6'Height'#2#14#3'Top'#2#27#5'Width'#2#31#7'Caption'#6
+  +#5'Row 1'#11'ParentColor'#8#0#0#6'TLabel'#6'Label7'#4'Left'#2#7#6'Height'#2
+  +#14#3'Top'#2';'#5'Width'#2#31#7'Caption'#6#5'Row 2'#11'ParentColor'#8#0#0#6
+  +'TLabel'#6'Label8'#4'Left'#2'('#6'Height'#2#14#3'Top'#2#9#5'Width'#2#29#7'Ca'
+  +'ption'#6#6'Col. 1'#11'ParentColor'#8#0#0#6'TLabel'#6'Label9'#4'Left'#2'X'#6
+  +'Height'#2#14#3'Top'#2#9#5'Width'#2#29#7'Caption'#6#6'Col. 2'#11'ParentColor'
+  +#8#0#0#5'TEdit'#8'RC11Edit'#4'Left'#2'('#6'Height'#2#21#3'Top'#2#24#5'Width'
+  +#2'&'#10'OnKeyPress'#7#16'RC11EditKeyPress'#8'TabOrder'#2#0#4'Text'#6#8'RC11'
+  +'Edit'#0#0#5'TEdit'#8'RC12Edit'#4'Left'#2'W'#6'Height'#2#20#3'Top'#2#24#5'Wi'
+  +'dth'#2'+'#10'OnKeyPress'#7#16'RC12EditKeyPress'#8'TabOrder'#2#1#4'Text'#6#8
+  +'RC12Edit'#0#0#5'TEdit'#8'RC21Edit'#4'Left'#2'('#6'Height'#2#18#3'Top'#2'7'#5
+  +'Width'#2'$'#10'OnKeyPress'#7#16'RC21EditKeyPress'#8'TabOrder'#2#2#4'Text'#6
+  +#8'RC21Edit'#0#0#5'TEdit'#8'RC22Edit'#4'Left'#2'X'#6'Height'#2#16#3'Top'#2'6'
+  +#5'Width'#2'*'#10'OnKeyPress'#7#16'RC22EditKeyPress'#8'TabOrder'#2#3#4'Text'
+  +#6#8'RC22Edit'#0#0#0#7'TButton'#8'ResetBtn'#4'Left'#3#168#1#6'Height'#2#29#3
+  +'Top'#2'p'#5'Width'#2'S'#7'Caption'#6#5'Reset'#7'OnClick'#7#13'ResetBtnClick'
+  +#8'TabOrder'#2#8#0#0#7'TButton'#9'CancelBtn'#4'Left'#3#168#1#6'Height'#2#29#3
+  +'Top'#3#176#0#5'Width'#2'S'#7'Caption'#6#6'Cancel'#11'ModalResult'#2#2#8'Tab'
+  +'Order'#2#9#0#0#7'TButton'#10'ComputeBtn'#4'Left'#3#168#1#6'Height'#2#29#3'T'
+  +'op'#3#240#0#5'Width'#2'S'#7'Caption'#6#7'Compute'#7'OnClick'#7#15'ComputeBt'
+  +'nClick'#8'TabOrder'#2#10#0#0#7'TButton'#9'ReturnBtn'#4'Left'#3#168#1#6'Heig'
+  +'ht'#2#29#3'Top'#3'('#1#5'Width'#2'S'#7'Caption'#6#6'Return'#11'ModalResult'
+  +#2#1#8'TabOrder'#2#11#0#0#0
+]);
--- a/applications/lazstats/source_orig/EXPSMOOTHUNIT.PAS
+++ b/applications/lazstats/source_orig/EXPSMOOTHUNIT.PAS
@ -0,0 +1,56 @@
+unit ExpSmoothUnit;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  StdCtrls;
+
+type
+
+  { TExpSmoothFrm }
+
+  TExpSmoothFrm = class(TForm)
+    AlphaEdit: TEdit;
+    CancelBtn: TButton;
+    OKBtn: TButton;
+    Label1: TLabel;
+    Label2: TLabel;
+    Label3: TLabel;
+    AlphaScroll: TScrollBar;
+    procedure AlphaScrollChange(Sender: TObject);
+    procedure FormShow(Sender: TObject);
+  private
+    { private declarations }
+  public
+    { public declarations }
+    alpha : double;
+  end; 
+
+var
+  ExpSmoothFrm: TExpSmoothFrm;
+
+implementation
+
+{ TExpSmoothFrm }
+
+procedure TExpSmoothFrm.FormShow(Sender: TObject);
+begin
+    AlphaEdit.Text := '0.99';
+    AlphaScroll.Position := 99;
+    alpha := 0.99;
+end;
+
+procedure TExpSmoothFrm.AlphaScrollChange(Sender: TObject);
+begin
+    AlphaEdit.Text := FloatToStr(AlphaScroll.Position / 100.0);
+    alpha := AlphaScroll.Position / 100.0;
+end;
+
+initialization
+  {$I expsmoothunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/EXPSMOOTHUNIT.lfm
+++ b/applications/lazstats/source_orig/EXPSMOOTHUNIT.lfm
@ -0,0 +1,72 @@
+object ExpSmoothFrm: TExpSmoothFrm
+  Left = 208
+  Height = 166
+  Top = 135
+  Width = 273
+  Caption = 'Exponential Smoothing Form'
+  ClientHeight = 166
+  ClientWidth = 273
+  OnShow = FormShow
+  LCLVersion = '0.9.28.2'
+  object Label1: TLabel
+    Left = 8
+    Height = 14
+    Top = 24
+    Width = 42
+    Caption = 'Alpha = '
+    ParentColor = False
+  end
+  object Label2: TLabel
+    Left = 8
+    Height = 14
+    Top = 80
+    Width = 17
+    Caption = '0.0'
+    ParentColor = False
+  end
+  object Label3: TLabel
+    Left = 240
+    Height = 14
+    Top = 80
+    Width = 17
+    Caption = '1.0'
+    ParentColor = False
+  end
+  object AlphaEdit: TEdit
+    Left = 64
+    Height = 21
+    Top = 17
+    Width = 44
+    TabOrder = 0
+    Text = '0.99'
+  end
+  object AlphaScroll: TScrollBar
+    Left = 8
+    Height = 23
+    Top = 48
+    Width = 253
+    Max = 1
+    PageSize = 0
+    Position = 1
+    TabOrder = 1
+    OnChange = AlphaScrollChange
+  end
+  object CancelBtn: TButton
+    Left = 8
+    Height = 28
+    Top = 112
+    Width = 75
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 2
+  end
+  object OKBtn: TButton
+    Left = 184
+    Height = 28
+    Top = 112
+    Width = 75
+    Caption = 'OK'
+    ModalResult = 1
+    TabOrder = 3
+  end
+end
--- a/applications/lazstats/source_orig/EXPSMOOTHUNIT.lrs
+++ b/applications/lazstats/source_orig/EXPSMOOTHUNIT.lrs
@ -0,0 +1,20 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TExpSmoothFrm','FORMDATA',[
+  'TPF0'#13'TExpSmoothFrm'#12'ExpSmoothFrm'#4'Left'#3#208#0#6'Height'#3#166#0#3
+  +'Top'#3#135#0#5'Width'#3#17#1#7'Caption'#6#26'Exponential Smoothing Form'#12
+  +'ClientHeight'#3#166#0#11'ClientWidth'#3#17#1#6'OnShow'#7#8'FormShow'#10'LCL'
+  +'Version'#6#8'0.9.28.2'#0#6'TLabel'#6'Label1'#4'Left'#2#8#6'Height'#2#14#3'T'
+  +'op'#2#24#5'Width'#2'*'#7'Caption'#6#8'Alpha = '#11'ParentColor'#8#0#0#6'TLa'
+  +'bel'#6'Label2'#4'Left'#2#8#6'Height'#2#14#3'Top'#2'P'#5'Width'#2#17#7'Capti'
+  +'on'#6#3'0.0'#11'ParentColor'#8#0#0#6'TLabel'#6'Label3'#4'Left'#3#240#0#6'He'
+  +'ight'#2#14#3'Top'#2'P'#5'Width'#2#17#7'Caption'#6#3'1.0'#11'ParentColor'#8#0
+  +#0#5'TEdit'#9'AlphaEdit'#4'Left'#2'@'#6'Height'#2#21#3'Top'#2#17#5'Width'#2
+  +','#8'TabOrder'#2#0#4'Text'#6#4'0.99'#0#0#10'TScrollBar'#11'AlphaScroll'#4'L'
+  +'eft'#2#8#6'Height'#2#23#3'Top'#2'0'#5'Width'#3#253#0#3'Max'#2#1#8'PageSize'
+  +#2#0#8'Position'#2#1#8'TabOrder'#2#1#8'OnChange'#7#17'AlphaScrollChange'#0#0
+  +#7'TButton'#9'CancelBtn'#4'Left'#2#8#6'Height'#2#28#3'Top'#2'p'#5'Width'#2'K'
+  +#7'Caption'#6#6'Cancel'#11'ModalResult'#2#2#8'TabOrder'#2#2#0#0#7'TButton'#5
+  +'OKBtn'#4'Left'#3#184#0#6'Height'#2#28#3'Top'#2'p'#5'Width'#2'K'#7'Caption'#6
+  +#2'OK'#11'ModalResult'#2#1#8'TabOrder'#2#3#0#0#0
+]);
--- a/applications/lazstats/source_orig/FACTORUNIT.PAS
+++ b/applications/lazstats/source_orig/FACTORUNIT.PAS
--- a/applications/lazstats/source_orig/FACTORUNIT.lfm
+++ b/applications/lazstats/source_orig/FACTORUNIT.lfm
@ -0,0 +1,379 @@
+object FactorFrm: TFactorFrm
+  Left = 181
+  Height = 486
+  Top = 99
+  Width = 608
+  Caption = 'Factor Analysis'
+  ClientHeight = 486
+  ClientWidth = 608
+  OnShow = FormShow
+  LCLVersion = '0.9.28.2'
+  object Label1: TLabel
+    Left = 6
+    Height = 14
+    Top = 1
+    Width = 90
+    Caption = 'Available Variables'
+    ParentColor = False
+  end
+  object Label2: TLabel
+    Left = 227
+    Height = 14
+    Top = 1
+    Width = 88
+    Caption = 'Selected Variables'
+    ParentColor = False
+  end
+  object Label3: TLabel
+    Left = 415
+    Height = 14
+    Top = 328
+    Width = 115
+    Caption = 'Min. root size to rotate:'
+    ParentColor = False
+  end
+  object Label4: TLabel
+    Left = 415
+    Height = 14
+    Top = 358
+    Width = 99
+    Caption = 'Maximum Iterations:'
+    ParentColor = False
+  end
+  object Label5: TLabel
+    Left = 414
+    Height = 14
+    Top = 391
+    Width = 108
+    Caption = 'Maximum No. Factors:'
+    ParentColor = False
+  end
+  object VarList: TListBox
+    Left = 7
+    Height = 295
+    Top = 15
+    Width = 169
+    ItemHeight = 0
+    MultiSelect = True
+    TabOrder = 0
+  end
+  object InBtn: TBitBtn
+    Left = 183
+    Height = 35
+    Top = 16
+    Width = 36
+    Glyph.Data = {
+      36040000424D3604000000000000360000002800000010000000100000000100
+      2000000000000004000064000000640000000000000000000000FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
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+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00
+    }
+    NumGlyphs = 0
+    OnClick = InBtnClick
+    TabOrder = 1
+  end
+  object OutBtn: TBitBtn
+    Left = 184
+    Height = 35
+    Top = 56
+    Width = 36
+    Glyph.Data = {
+      36040000424D3604000000000000360000002800000010000000100000000100
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+      FF00FFFFFF0068C774DB65C371F7FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
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+      FF00FFFFFF0068C7740668C774BBFFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFF
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+      FF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00FFFFFF00
+    }
+    NumGlyphs = 0
+    OnClick = OutBtnClick
+    TabOrder = 2
+  end
+  object FactorList: TListBox
+    Left = 225
+    Height = 292
+    Top = 16
+    Width = 173
+    ItemHeight = 0
+    TabOrder = 3
+  end
+  object TypeGroup: TRadioGroup
+    Left = 416
+    Height = 156
+    Top = 4
+    Width = 187
+    AutoFill = True
+    Caption = 'Type of Analysis'
+    ChildSizing.LeftRightSpacing = 6
+    ChildSizing.TopBottomSpacing = 6
+    ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
+    ChildSizing.EnlargeVertical = crsHomogenousChildResize
+    ChildSizing.ShrinkHorizontal = crsScaleChilds
+    ChildSizing.ShrinkVertical = crsScaleChilds
+    ChildSizing.Layout = cclLeftToRightThenTopToBottom
+    ChildSizing.ControlsPerLine = 1
+    ClientHeight = 138
+    ClientWidth = 183
+    Items.Strings = (
+      'Principal Components'
+      'Partial Image (No Iterations)'
+      'Guttman Image'
+      'Harris Scaled Image'
+      'Canonical (Max. Likelihood)'
+      'Alpha'
+      'Principal Factors'
+    )
+    TabOrder = 4
+  end
+  object RotateGroup: TRadioGroup
+    Left = 415
+    Height = 133
+    Top = 176
+    Width = 187
+    AutoFill = True
+    Caption = 'Rotation Option'
+    ChildSizing.LeftRightSpacing = 6
+    ChildSizing.TopBottomSpacing = 6
+    ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
+    ChildSizing.EnlargeVertical = crsHomogenousChildResize
+    ChildSizing.ShrinkHorizontal = crsScaleChilds
+    ChildSizing.ShrinkVertical = crsScaleChilds
+    ChildSizing.Layout = cclLeftToRightThenTopToBottom
+    ChildSizing.ControlsPerLine = 1
+    ClientHeight = 115
+    ClientWidth = 183
+    Items.Strings = (
+      'Varimax'
+      'Oblimax'
+      'Quartimax'
+      'Manual (Graphical)'
+      'Procrustian'
+      'NO rotation'
+    )
+    TabOrder = 5
+  end
+  object GroupBox1: TGroupBox
+    Left = 6
+    Height = 110
+    Top = 320
+    Width = 393
+    Caption = 'Output Options:'
+    ClientHeight = 92
+    ClientWidth = 389
+    TabOrder = 6
+    object DescBtn: TCheckBox
+      Left = 6
+      Height = 17
+      Top = 2
+      Width = 119
+      Caption = 'Descriptive Statistics'
+      TabOrder = 0
+    end
+    object RMatBtn: TCheckBox
+      Left = 6
+      Height = 17
+      Top = 24
+      Width = 106
+      Caption = 'Correlation Matrix'
+      TabOrder = 1
+    end
+    object UnrotBtn: TCheckBox
+      Left = 5
+      Height = 17
+      Top = 46
+      Width = 108
+      Caption = 'Unrotated Factors'
+      TabOrder = 2
+    end
+    object PcntTrBtn: TCheckBox
+      Left = 6
+      Height = 17
+      Top = 67
+      Width = 87
+      Caption = 'Percent Trace'
+      TabOrder = 3
+    end
+    object ScreeBtn: TCheckBox
+      Left = 137
+      Height = 17
+      Top = 2
+      Width = 68
+      Caption = 'Scree Plot'
+      TabOrder = 4
+    end
+    object ComUnBtn: TCheckBox
+      Left = 136
+      Height = 17
+      Top = 24
+      Width = 88
+      Caption = 'Communalities'
+      TabOrder = 5
+    end
+    object PlotBtn: TCheckBox
+      Left = 137
+      Height = 17
+      Top = 46
+      Width = 77
+      Caption = 'Plot Factors'
+      TabOrder = 6
+    end
+    object ScoresBtn: TCheckBox
+      Left = 137
+      Height = 17
+      Top = 67
+      Width = 86
+      Caption = 'Factor Scores'
+      TabOrder = 7
+    end
+    object SaveCorsBtn: TCheckBox
+      Left = 248
+      Height = 17
+      Top = 2
+      Width = 133
+      Caption = 'Save Correlation Matrix'
+      TabOrder = 8
+    end
+    object SaveFactBtn: TCheckBox
+      Left = 248
+      Height = 17
+      Top = 24
+      Width = 111
+      Caption = 'Save Factor Matrix'
+      TabOrder = 9
+    end
+    object SortBtn: TCheckBox
+      Left = 248
+      Height = 17
+      Top = 46
+      Width = 79
+      Caption = 'Sort Factors'
+      TabOrder = 10
+    end
+  end
+  object MinRootEdit: TEdit
+    Left = 568
+    Height = 21
+    Top = 323
+    Width = 32
+    TabOrder = 7
+    Text = 'MinRootEdit'
+  end
+  object MaxItersEdit: TEdit
+    Left = 568
+    Height = 21
+    Top = 353
+    Width = 32
+    TabOrder = 8
+    Text = 'Edit1'
+  end
+  object MaxFactorsEdit: TEdit
+    Left = 568
+    Height = 21
+    Top = 386
+    Width = 32
+    TabOrder = 9
+    Text = 'Edit1'
+  end
+  object ResetBtn: TButton
+    Left = 7
+    Height = 30
+    Top = 440
+    Width = 74
+    Caption = 'Reset'
+    OnClick = ResetBtnClick
+    TabOrder = 10
+  end
+  object CancelBtn: TButton
+    Left = 102
+    Height = 30
+    Top = 440
+    Width = 74
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 11
+  end
+  object ComputeBtn: TButton
+    Left = 224
+    Height = 30
+    Top = 440
+    Width = 74
+    Caption = 'Compute'
+    OnClick = ComputeBtnClick
+    TabOrder = 12
+  end
+  object ReturnBtn: TButton
+    Left = 320
+    Height = 30
+    Top = 440
+    Width = 74
+    Caption = 'Return'
+    ModalResult = 1
+    TabOrder = 13
+  end
+  object OpenDialog1: TOpenDialog
+    left = 425
+    top = 431
+  end
+  object SaveDialog1: TSaveDialog
+    left = 472
+    top = 431
+  end
+end
--- a/applications/lazstats/source_orig/FACTORUNIT.lrs
+++ b/applications/lazstats/source_orig/FACTORUNIT.lrs
@ -0,0 +1,180 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TFactorFrm','FORMDATA',[
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+  +#11'ClientWidth'#3'`'#2#6'OnShow'#7#8'FormShow'#10'LCLVersion'#6#8'0.9.28.2'
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+  +'Height'#2#14#3'Top'#3'H'#1#5'Width'#2's'#7'Caption'#6#25'Min. root size to '
+  +'rotate:'#11'ParentColor'#8#0#0#6'TLabel'#6'Label4'#4'Left'#3#159#1#6'Height'
+  +#2#14#3'Top'#3'f'#1#5'Width'#2'c'#7'Caption'#6#19'Maximum Iterations:'#11'Pa'
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+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
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+  +'O'#184#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0'S'#169'\'#217'M'#161'V'
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+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0']'#184'h'#207'q'#190'{'#255'z'#193#131#255
+  +'['#170'd'#255'G'#153'O'#255'A'#145'I'#255';'#136'B'#255'5'#128';'#255'/x5'
+  +#255'*p/'#255'%i)'#255'!c$'#255#29'^ '#255#255#255#255#0#255#255#255#0'e'#195
+  +'q'#196'{'#200#134#255#156#213#165#255#152#211#161#255#148#208#157#255#144
+  +#206#152#255#139#203#147#255#135#201#142#255#130#198#137#255'~'#195#132#255
+  +'z'#193#128#255'v'#190'|'#255'r'#189'x'#255'!c$'#255#255#255#255#0#255#255
+  +#255#0'h'#199't'#201#127#204#138#255#162#216#171#255#158#214#167#255#154#212
+  +#163#255#150#210#159#255#147#207#154#255#142#204#149#255#137#202#144#255#133
+  +#199#139#255#129#197#135#255'}'#194#130#255'x'#192'~'#255'%i)'#255#255#255
+  +#255#0#255#255#255#0#255#255#255#0'h'#199't'#209#128#205#139#255'|'#201#135
+  +#255']'#184'h'#255'X'#177'b'#255'S'#169'\'#255'M'#161'V'#255'G'#153'O'#255'A'
+  +#145'I'#255';'#136'B'#255'5'#128';'#255'/x5'#255'*p/'#255#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0'h'#199't'#219'e'#195'q'#247#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0'h'#199't'#6'h'#199't'#187#255#255#255
+  +#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255
+  +#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0
+  +#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255
+  +#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#255#255#255#0#9'NumGlyp'
+  +'hs'#2#0#7'OnClick'#7#11'OutBtnClick'#8'TabOrder'#2#2#0#0#8'TListBox'#10'Fac'
+  +'torList'#4'Left'#3#225#0#6'Height'#3'$'#1#3'Top'#2#16#5'Width'#3#173#0#10'I'
+  +'temHeight'#2#0#8'TabOrder'#2#3#0#0#11'TRadioGroup'#9'TypeGroup'#4'Left'#3
+  +#160#1#6'Height'#3#156#0#3'Top'#2#4#5'Width'#3#187#0#8'AutoFill'#9#7'Caption'
+  +#6#16'Type of Analysis'#28'ChildSizing.LeftRightSpacing'#2#6#28'ChildSizing.'
+  +'TopBottomSpacing'#2#6#29'ChildSizing.EnlargeHorizontal'#7#24'crsHomogenousC'
+  +'hildResize'#27'ChildSizing.EnlargeVertical'#7#24'crsHomogenousChildResize'
+  +#28'ChildSizing.ShrinkHorizontal'#7#14'crsScaleChilds'#26'ChildSizing.Shrink'
+  +'Vertical'#7#14'crsScaleChilds'#18'ChildSizing.Layout'#7#29'cclLeftToRightTh'
+  +'enTopToBottom'#27'ChildSizing.ControlsPerLine'#2#1#12'ClientHeight'#3#138#0
+  +#11'ClientWidth'#3#183#0#13'Items.Strings'#1#6#20'Principal Components'#6#29
+  +'Partial Image (No Iterations)'#6#13'Guttman Image'#6#19'Harris Scaled Image'
+  ,#6#27'Canonical (Max. Likelihood)'#6#5'Alpha'#6#17'Principal Factors'#0#8'Ta'
+  +'bOrder'#2#4#0#0#11'TRadioGroup'#11'RotateGroup'#4'Left'#3#159#1#6'Height'#3
+  +#133#0#3'Top'#3#176#0#5'Width'#3#187#0#8'AutoFill'#9#7'Caption'#6#15'Rotatio'
+  +'n Option'#28'ChildSizing.LeftRightSpacing'#2#6#28'ChildSizing.TopBottomSpac'
+  +'ing'#2#6#29'ChildSizing.EnlargeHorizontal'#7#24'crsHomogenousChildResize'#27
+  +'ChildSizing.EnlargeVertical'#7#24'crsHomogenousChildResize'#28'ChildSizing.'
+  +'ShrinkHorizontal'#7#14'crsScaleChilds'#26'ChildSizing.ShrinkVertical'#7#14
+  +'crsScaleChilds'#18'ChildSizing.Layout'#7#29'cclLeftToRightThenTopToBottom'
+  +#27'ChildSizing.ControlsPerLine'#2#1#12'ClientHeight'#2's'#11'ClientWidth'#3
+  +#183#0#13'Items.Strings'#1#6#7'Varimax'#6#7'Oblimax'#6#9'Quartimax'#6#18'Man'
+  +'ual (Graphical)'#6#11'Procrustian'#6#11'NO rotation'#0#8'TabOrder'#2#5#0#0#9
+  +'TGroupBox'#9'GroupBox1'#4'Left'#2#6#6'Height'#2'n'#3'Top'#3'@'#1#5'Width'#3
+  +#137#1#7'Caption'#6#15'Output Options:'#12'ClientHeight'#2'\'#11'ClientWidth'
+  +#3#133#1#8'TabOrder'#2#6#0#9'TCheckBox'#7'DescBtn'#4'Left'#2#6#6'Height'#2#17
+  +#3'Top'#2#2#5'Width'#2'w'#7'Caption'#6#22'Descriptive Statistics'#8'TabOrder'
+  +#2#0#0#0#9'TCheckBox'#7'RMatBtn'#4'Left'#2#6#6'Height'#2#17#3'Top'#2#24#5'Wi'
+  +'dth'#2'j'#7'Caption'#6#18'Correlation Matrix'#8'TabOrder'#2#1#0#0#9'TCheckB'
+  +'ox'#8'UnrotBtn'#4'Left'#2#5#6'Height'#2#17#3'Top'#2'.'#5'Width'#2'l'#7'Capt'
+  +'ion'#6#17'Unrotated Factors'#8'TabOrder'#2#2#0#0#9'TCheckBox'#9'PcntTrBtn'#4
+  +'Left'#2#6#6'Height'#2#17#3'Top'#2'C'#5'Width'#2'W'#7'Caption'#6#13'Percent '
+  +'Trace'#8'TabOrder'#2#3#0#0#9'TCheckBox'#8'ScreeBtn'#4'Left'#3#137#0#6'Heigh'
+  +'t'#2#17#3'Top'#2#2#5'Width'#2'D'#7'Caption'#6#10'Scree Plot'#8'TabOrder'#2#4
+  +#0#0#9'TCheckBox'#8'ComUnBtn'#4'Left'#3#136#0#6'Height'#2#17#3'Top'#2#24#5'W'
+  +'idth'#2'X'#7'Caption'#6#13'Communalities'#8'TabOrder'#2#5#0#0#9'TCheckBox'#7
+  +'PlotBtn'#4'Left'#3#137#0#6'Height'#2#17#3'Top'#2'.'#5'Width'#2'M'#7'Caption'
+  +#6#12'Plot Factors'#8'TabOrder'#2#6#0#0#9'TCheckBox'#9'ScoresBtn'#4'Left'#3
+  +#137#0#6'Height'#2#17#3'Top'#2'C'#5'Width'#2'V'#7'Caption'#6#13'Factor Score'
+  +'s'#8'TabOrder'#2#7#0#0#9'TCheckBox'#11'SaveCorsBtn'#4'Left'#3#248#0#6'Heigh'
+  +'t'#2#17#3'Top'#2#2#5'Width'#3#133#0#7'Caption'#6#23'Save Correlation Matrix'
+  +#8'TabOrder'#2#8#0#0#9'TCheckBox'#11'SaveFactBtn'#4'Left'#3#248#0#6'Height'#2
+  +#17#3'Top'#2#24#5'Width'#2'o'#7'Caption'#6#18'Save Factor Matrix'#8'TabOrder'
+  +#2#9#0#0#9'TCheckBox'#7'SortBtn'#4'Left'#3#248#0#6'Height'#2#17#3'Top'#2'.'#5
+  +'Width'#2'O'#7'Caption'#6#12'Sort Factors'#8'TabOrder'#2#10#0#0#0#5'TEdit'#11
+  +'MinRootEdit'#4'Left'#3'8'#2#6'Height'#2#21#3'Top'#3'C'#1#5'Width'#2' '#8'Ta'
+  +'bOrder'#2#7#4'Text'#6#11'MinRootEdit'#0#0#5'TEdit'#12'MaxItersEdit'#4'Left'
+  +#3'8'#2#6'Height'#2#21#3'Top'#3'a'#1#5'Width'#2' '#8'TabOrder'#2#8#4'Text'#6
+  +#5'Edit1'#0#0#5'TEdit'#14'MaxFactorsEdit'#4'Left'#3'8'#2#6'Height'#2#21#3'To'
+  +'p'#3#130#1#5'Width'#2' '#8'TabOrder'#2#9#4'Text'#6#5'Edit1'#0#0#7'TButton'#8
+  +'ResetBtn'#4'Left'#2#7#6'Height'#2#30#3'Top'#3#184#1#5'Width'#2'J'#7'Caption'
+  +#6#5'Reset'#7'OnClick'#7#13'ResetBtnClick'#8'TabOrder'#2#10#0#0#7'TButton'#9
+  +'CancelBtn'#4'Left'#2'f'#6'Height'#2#30#3'Top'#3#184#1#5'Width'#2'J'#7'Capti'
+  +'on'#6#6'Cancel'#11'ModalResult'#2#2#8'TabOrder'#2#11#0#0#7'TButton'#10'Comp'
+  +'uteBtn'#4'Left'#3#224#0#6'Height'#2#30#3'Top'#3#184#1#5'Width'#2'J'#7'Capti'
+  +'on'#6#7'Compute'#7'OnClick'#7#15'ComputeBtnClick'#8'TabOrder'#2#12#0#0#7'TB'
+  +'utton'#9'ReturnBtn'#4'Left'#3'@'#1#6'Height'#2#30#3'Top'#3#184#1#5'Width'#2
+  +'J'#7'Caption'#6#6'Return'#11'ModalResult'#2#1#8'TabOrder'#2#13#0#0#11'TOpen'
+  +'Dialog'#11'OpenDialog1'#4'left'#3#169#1#3'top'#3#175#1#0#0#11'TSaveDialog'
+  +#11'SaveDialog1'#4'left'#3#216#1#3'top'#3#175#1#0#0#0
+]);
--- a/applications/lazstats/source_orig/FFTUNIT.PAS
+++ b/applications/lazstats/source_orig/FFTUNIT.PAS
@ -0,0 +1,36 @@
+unit FFTUnit;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  StdCtrls;
+
+type
+
+  { TFFTFrm }
+
+  TFFTFrm = class(TForm)
+    CancelBtn: TButton;
+    OKBtn: TButton;
+    NptsEdit: TEdit;
+    Label1: TLabel;
+    Memo1: TMemo;
+  private
+    { private declarations }
+  public
+    { public declarations }
+  end; 
+
+var
+  FFTFrm: TFFTFrm;
+
+implementation
+
+initialization
+  {$I fftunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/FFTUNIT.lfm
+++ b/applications/lazstats/source_orig/FFTUNIT.lfm
@ -0,0 +1,54 @@
+object FFTFrm: TFFTFrm
+  Left = 192
+  Height = 138
+  Top = 136
+  Width = 232
+  Caption = 'Fourier Transform Form'
+  ClientHeight = 138
+  ClientWidth = 232
+  LCLVersion = '0.9.28.2'
+  object Label1: TLabel
+    Left = 8
+    Height = 14
+    Top = 72
+    Width = 90
+    Caption = 'Number of points: '
+    ParentColor = False
+  end
+  object Memo1: TMemo
+    Left = 7
+    Height = 44
+    Top = 8
+    Width = 209
+    Lines.Strings = (
+      'Enter the number of data points to '
+      'include in the Fourier smoothing.'
+    )
+    TabOrder = 0
+  end
+  object NptsEdit: TEdit
+    Left = 104
+    Height = 21
+    Top = 62
+    Width = 45
+    TabOrder = 1
+  end
+  object CancelBtn: TButton
+    Left = 7
+    Height = 29
+    Top = 97
+    Width = 70
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 2
+  end
+  object OKBtn: TButton
+    Left = 112
+    Height = 29
+    Top = 97
+    Width = 70
+    Caption = 'OK'
+    ModalResult = 1
+    TabOrder = 3
+  end
+end
--- a/applications/lazstats/source_orig/FFTUNIT.lrs
+++ b/applications/lazstats/source_orig/FFTUNIT.lrs
@ -0,0 +1,16 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TFFTFrm','FORMDATA',[
+  'TPF0'#7'TFFTFrm'#6'FFTFrm'#4'Left'#3#192#0#6'Height'#3#138#0#3'Top'#3#136#0#5
+  +'Width'#3#232#0#7'Caption'#6#22'Fourier Transform Form'#12'ClientHeight'#3
+  +#138#0#11'ClientWidth'#3#232#0#10'LCLVersion'#6#8'0.9.28.2'#0#6'TLabel'#6'La'
+  +'bel1'#4'Left'#2#8#6'Height'#2#14#3'Top'#2'H'#5'Width'#2'Z'#7'Caption'#6#18
+  +'Number of points: '#11'ParentColor'#8#0#0#5'TMemo'#5'Memo1'#4'Left'#2#7#6'H'
+  +'eight'#2','#3'Top'#2#8#5'Width'#3#209#0#13'Lines.Strings'#1#6'#Enter the nu'
+  +'mber of data points to '#6'!include in the Fourier smoothing.'#0#8'TabOrder'
+  +#2#0#0#0#5'TEdit'#8'NptsEdit'#4'Left'#2'h'#6'Height'#2#21#3'Top'#2'>'#5'Widt'
+  +'h'#2'-'#8'TabOrder'#2#1#0#0#7'TButton'#9'CancelBtn'#4'Left'#2#7#6'Height'#2
+  +#29#3'Top'#2'a'#5'Width'#2'F'#7'Caption'#6#6'Cancel'#11'ModalResult'#2#2#8'T'
+  +'abOrder'#2#2#0#0#7'TButton'#5'OKBtn'#4'Left'#2'p'#6'Height'#2#29#3'Top'#2'a'
+  +#5'Width'#2'F'#7'Caption'#6#2'OK'#11'ModalResult'#2#1#8'TabOrder'#2#3#0#0#0
+]);
--- a/applications/lazstats/source_orig/FILEEXTRACTUNIT.PAS
+++ b/applications/lazstats/source_orig/FILEEXTRACTUNIT.PAS
@ -0,0 +1,447 @@
+unit FileExtractUnit;
+
+{$MODE Delphi}
+
+interface
+
+uses
+  LCLIntf, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
+  StdCtrls, Grids, ExtCtrls, GLOBALS, OS3MainUnit, DATAPROCS, DICTIONARYUNIT,
+  LResources, Buttons;
+
+type
+  TFileExtractFrm = class(TForm)
+    Memo1: TMemo;
+    Label2: TLabel;
+    NoLinesEdit: TEdit;
+    Label3: TLabel;
+    NoFieldsEdit: TEdit;
+    FormatGrp: TRadioGroup;
+    Label4: TLabel;
+    KeyVarNoEdit: TEdit;
+    Label5: TLabel;
+    ValueEdit: TEdit;
+    LabelsChk: TCheckBox;
+    FmtGrid: TStringGrid;
+    CancelBtn: TButton;
+    OKBtn: TButton;
+    ResetBtn: TButton;
+    ExtractBtn: TButton;
+    OpenDialog1: TOpenDialog;
+    FileSelBtn: TButton;
+    Label1: TLabel;
+    NoGotEdit: TEdit;
+    Label6: TLabel;
+    RecdReadEdit: TEdit;
+    TypeBox: TComboBox;
+    procedure ResetBtnClick(Sender: TObject);
+    procedure FormShow(Sender: TObject);
+    procedure CancelBtnClick(Sender: TObject);
+    procedure FormatGrpClick(Sender: TObject);
+    procedure OKBtnClick(Sender: TObject);
+    procedure ExtractBtnClick(Sender: TObject);
+    procedure FileSelBtnClick(Sender: TObject);
+    procedure TypeBoxChange(Sender: TObject);
+  private
+    { Private declarations }
+    FileName : string;
+
+  public
+    { Public declarations }
+    function GetValues(VAR TheFile : TextFile;
+                       NoLines : integer;
+                       NoFlds : integer;
+                       Token : integer;
+                       VAR StrValues : StrDyneVec) : boolean;
+    procedure PutGrid(RecdNo : integer;
+                      NoFlds : integer;
+                      LabelsFirst : boolean;
+                      VAR StrValues : StrDyneVec);
+    function GetFmtValues(VAR TheFile : TextFile;
+                          NoLines : integer;
+                          NoFlds : integer;
+                          VAR StrValues : StrDyneVec) : boolean;
+  end;
+
+var
+  FileExtractFrm: TFileExtractFrm;
+
+implementation
+
+
+procedure TFileExtractFrm.ResetBtnClick(Sender: TObject);
+begin
+    NoLinesEdit.Text := '1';
+    NoFieldsEdit.Text := '';
+    KeyVarNoEdit.Text := '';
+    ValueEdit.Text := '';
+    NoGotEdit.Text := '';
+    RecdReadEdit.Text := '';
+    FormatGrp.ItemIndex := 0;
+    LabelsChk.Checked := false;
+    FmtGrid.Cells[0,0] := 'Field';
+    FmtGrid.Cells[1,0] := 'Start';
+    FmtGrid.Cells[2,0] := 'End';
+    FmtGrid.Cells[3,0] := 'Data Type';
+    FmtGrid.Cells[4,0] := 'Line No.';
+    FmtGrid.Cells[5,0] := 'Label';
+    FmtGrid.Visible := false;
+    TypeBox.Text := 'Types';
+    TypeBox.Visible := false;
+end;
+//--------------------------------------------------------
+
+procedure TFileExtractFrm.FormShow(Sender: TObject);
+begin
+    ResetBtnClick(self);
+end;
+//---------------------------------------------------------
+
+procedure TFileExtractFrm.CancelBtnClick(Sender: TObject);
+begin
+    FileExtractFrm.Hide;
+end;
+//--------------------------------------------------------------
+
+procedure TFileExtractFrm.FormatGrpClick(Sender: TObject);
+begin
+    if FormatGrp.ItemIndex = 3 then
+    begin
+        FmtGrid.RowCount := StrToInt(NoFieldsEdit.Text) + 1;
+        FmtGrid.Visible := true;
+        TypeBox.Visible := true;
+    end
+    else begin
+        FmtGrid.Visible := false;
+        TypeBox.Visible := false;
+    end;
+end;
+//-------------------------------------------------------------
+
+procedure TFileExtractFrm.OKBtnClick(Sender: TObject);
+begin
+    FileExtractFrm.Hide;
+end;
+//---------------------------------------------------------------------
+
+function TFileExtractFrm.GetValues(VAR TheFile : TextFile;
+                                   NoLines : integer;
+                                   NoFlds : integer;
+                                   Token : integer;
+                                   VAR StrValues : StrDyneVec) : boolean;
+var
+    done, endline : boolean;
+    i, valcount : integer;
+    cellstring : string;
+    achar : char;
+
+begin
+    done := false;
+    valcount := 0;
+
+    if not done then
+    begin
+        for i := 1 to NoLines do
+        begin
+            endline := false;
+            while not endline do
+            begin
+                read(TheFile,achar);
+                if EOF(TheFile) then
+                begin
+                    done := true;
+                    GetValues := done;
+                    exit;
+                end;
+                if ord(achar) = 10 then continue; //  ignore line feed
+                if ord(achar) <> 13 then // not a new line
+                begin
+                    if ord(achar) <> Token then // not a tab character
+                        cellstring := cellstring + achar
+                    else
+                    begin // Token character found - save string and bump counter
+                        StrValues[valcount] := cellstring;
+                        cellstring := '';
+                        valcount := valcount + 1;
+                    end;
+                end // not a new line - tab or character found
+                else begin
+                    endline := true;
+                    StrValues[valcount] := cellstring;
+                    valcount := valcount + 1;
+                    cellstring := '';
+                end;
+            end; // next line
+        end; // next line
+    end // net yet at eof
+    else done := true;
+    if valcount <> NoFlds then
+    begin
+        ShowMessage('ERROR! Mismatched no. fields - see grid for first record');
+        FmtGrid.ColCount := valcount + 1;
+        FmtGrid.Visible := true;
+        for i := 1 to NoFlds do
+            FmtGrid.Cells[i-1,0] := StrValues[i-1];
+        done := true;
+    end;
+    GetValues := done;
+end;
+//---------------------------------------------------------------------
+
+procedure TFileExtractFrm.PutGrid(RecdNo : integer;
+                                  NoFlds : integer;
+                                  LabelsFirst : boolean;
+                                  VAR StrValues : StrDyneVec);
+var
+    i : integer;
+    cellstring : string;
+
+begin
+    if LabelsFirst = true then
+    begin
+        OS3MainFrm.DataGrid.RowCount := 2;
+        OS3MainFrm.DataGrid.Cells[0,0] := 'Case 0';
+        for i := 1 to NoFlds do OS3MainFrm.DataGrid.Cells[i,0] := StrValues[i-1];
+    end
+    else
+    begin
+        OS3MainFrm.DataGrid.RowCount := RecdNo + 1;
+        cellstring := 'Case ' + IntToStr(RecdNo);
+        OS3MainFrm.DataGrid.Cells[0,RecdNo] := cellstring;
+        for i := 1 to NoFlds do OS3MainFrm.DataGrid.Cells[i,RecdNo] := StrValues[i-1];
+    end;
+end;
+//---------------------------------------------------------------------
+
+procedure TFileExtractFrm.ExtractBtnClick(Sender: TObject);
+var
+    LabelsFirst : boolean; // first record contains variable labels
+    NoFlds : integer; // number of variables
+    NoLines : integer; // number of lines per record
+    FormatType : integer; // 1 = tab, 2 = comma, 3 = space, 4 = user spec.
+    KeyNo : integer; // sequence number of field containing the key
+    KeyValue : string; // value of the key field
+    TheFile : TextFile; // file handle
+    StrValues : StrDyneVec; // pointer to array of strings for record values
+    done : boolean;
+    NoRecords : integer;
+    Token : integer; // tab, comma or space charcter ordinal value
+    i, fldno : integer;
+    OldCursor : Tcursor;
+    NoRead : integer; // no. of records read from big file
+    fldtype : string;
+    cellstring : string; // for labels provided in the fmtgrid
+
+begin
+    // get entered values from the form
+    if LabelsChk.Checked then LabelsFirst := true else LabelsFirst := false;
+    NoFlds := StrToInt(NoFieldsEdit.Text);
+    NoLines := StrToInt(NoLinesEdit.Text);
+    FormatType := FormatGrp.ItemIndex + 1;
+    KeyNo := StrToInt(KeyVarNoEdit.Text);
+    KeyValue := ValueEdit.Text;
+    SetLength(StrValues,NoFlds + 1);
+    done := false;
+    NoRecords := 0;
+    Token := ord(' '); // default of a space
+    OldCursor := FileExtractFrm.Cursor;
+    NoRead := 0;
+    OS3MainFrm.DataGrid.ColCount := NoFlds + 1;
+    for i := 1 to NoFlds do
+    begin
+        DictionaryFrm.DictGrid.RowCount := i;
+        DictionaryFrm.Defaults(Self,i);
+        VarDefined[i] := true;
+    end;
+
+    // open file for processing
+    AssignFile(TheFile,FileName);
+    Reset(TheFile);
+
+    // process first (or second) record according to format type
+    case FormatType of
+    1, 2, 3 : begin  // tab seperated fields
+            FileExtractFrm.Cursor := crHourGlass;
+            if not LabelsFirst then
+            begin
+                // store labels (if not blank) into grid row 0 and type in defs.
+                for i := 1 to NoFlds do
+                begin
+                    cellstring := format('VAR%2d',[i]);
+                    OS3MainFrm.DataGrid.Cells[i,0] := cellstring;
+                end;
+            end;
+            while Not done do
+            begin
+                if FormatType = 1 then Token := 9; // tab character
+                if FormatType = 2 then Token := ord(','); // comma
+                if FormatType = 3 then Token := ord(' '); // space
+                done := GetValues(TheFile,NoLines,NoFlds,Token,StrValues);
+                if not done then
+                begin
+                    NoRead := NoRead + 1;
+                    if LabelsFirst then
+                    begin
+                        PutGrid(0,NoFlds,LabelsFirst,StrValues);
+                        LabelsFirst := false;
+                    end;
+                    RecdReadEdit.Text := IntToStr(NoRead);
+                    FileExtractFrm.Repaint;
+                    StrValues[KeyNo-1] := Trim(StrValues[KeyNo-1]);
+                    if StrValues[KeyNo-1] = KeyValue then // found group record
+                    begin
+                        NoRecords := NoRecords + 1;
+                        PutGrid(NoRecords,NoFlds,LabelsFirst,StrValues);
+                        NoGotEdit.Text := IntToStr(NoRecords);
+                    end;
+                end;
+            end;
+            FileExtractFrm.Cursor := OldCursor;
+            OS3MainFrm.NoCasesEdit.Text := IntToStr(NoRecords);
+            OS3MainFrm.NoVarsEdit.Text := IntToStr(NoFlds);
+            OS3MainFrm.RowEdit.Text := '1';
+            OS3MainFrm.ColEdit.Text := '1';
+            OS3MainFrm.DataGrid.Row := 1;
+            OS3MainFrm.DataGrid.Col := 1;
+            NoVariables := NoFlds;
+            NoCases := NoRecords;
+        end;
+    4 : begin  // user specified format
+            FileExtractFrm.Cursor := crHourGlass;
+            if not LabelsFirst then
+            begin
+                // store labels (if not blank) into grid row 0 and type in defs.
+                for i := 1 to NoFlds do
+                begin
+                    fldno := StrToInt(FmtGrid.Cells[0,i]);
+                    fldtype := FmtGrid.Cells[3,fldno];
+                    DictionaryFrm.DictGrid.Cells[4,fldno] := fldtype[2];
+                    cellstring := FmtGrid.Cells[5,fldno];
+                    DictionaryFrm.DictGrid.Cells[1,fldno] := cellstring;
+                    DictionaryFrm.DictGrid.Cells[2,fldno] := cellstring;
+                    if cellstring <> '' then OS3MainFrm.DataGrid.Cells[i,0] := cellstring;
+                end;
+            end;
+            while NOT done do
+            begin
+                done := GetFmtValues(TheFile,NoLines,NoFlds,StrValues);
+                if not done then
+                begin
+                    NoRead := NoRead + 1;
+                    if LabelsFirst then
+                    begin
+                        PutGrid(0,NoFlds,LabelsFirst,StrValues);
+                        LabelsFirst := false;
+                    end;
+                    RecdReadEdit.Text := IntToStr(NoRead);
+                    FileExtractFrm.Repaint;
+                    StrValues[KeyNo-1] := Trim(StrValues[KeyNo-1]);
+                    if StrValues[KeyNo-1] = KeyValue then // found group record
+                    begin
+                        NoRecords := NoRecords + 1;
+                        PutGrid(NoRecords,NoFlds,LabelsFirst,StrValues);
+                        NoGotEdit.Text := IntToStr(NoRecords);
+                    end;
+                end; // if not done
+            end; // while not done
+            FileExtractFrm.Cursor := OldCursor;
+            OS3MainFrm.NoCasesEdit.Text := IntToStr(NoRecords);
+            OS3MainFrm.NoVarsEdit.Text := IntToStr(NoFlds);
+            OS3MainFrm.RowEdit.Text := '1';
+            OS3MainFrm.ColEdit.Text := '1';
+            OS3MainFrm.DataGrid.Row := 1;
+            OS3MainFrm.DataGrid.Col := 1;
+            NoVariables := NoFlds;
+            NoCases := NoRecords;
+        end; // end case 4 (formatted input)
+    end; // end case switch
+    StrValues := nil;
+    CloseFile(TheFile);
+end;
+//------------------------------------------------------------------------
+
+procedure TFileExtractFrm.FileSelBtnClick(Sender: TObject);
+begin
+    OpenDialog1.Filter := 'Tab field files (*.tab)|*.TAB|Text files (*.txt)|*.TXT|All files (*.*)|*.*';
+    OpenDialog1.FilterIndex := 1;
+    OpenDialog1.DefaultExt := 'TAB';
+    if OpenDialog1.Execute then FileName := OpenDialog1.FileName
+    else ShowMessage('Error in opening File!');
+end;
+//-------------------------------------------------------------------------
+
+function TFileExtractFrm.GetFmtValues(VAR TheFile : TextFile;
+                                      NoLines : integer;
+                                      NoFlds : integer;
+                                      VAR StrValues : StrDyneVec) : boolean;
+var
+    done, endline : boolean;
+    i, j, endat, startat, stlong, valcount, fldno : integer;
+    LineStr : string;
+    achar : char;
+
+begin
+    done := false;
+    valcount := 0;
+
+    if not done then
+    begin
+        for i := 1 to NoLines do
+        begin
+            endline := false;
+            while not endline do
+            begin
+                read(TheFile,achar);
+                if EOF(TheFile) then
+                begin
+                    done := true;
+                    GetFmtValues := done;
+                    exit;
+                end;
+                if ord(achar) = 10 then continue; //  ignore line feed
+                if ord(achar) <> 13 then LineStr := LineStr + achar
+                else endline := true;
+            end;
+            // now, parse values in this line
+            for j := 1 to NoFlds do
+            begin
+                if StrToInt(FmtGrid.Cells[4,j]) <> i then continue; // in line i?
+                startat := StrToInt(FmtGrid.Cells[1,j]);
+                endat := StrToInt(FmtGrid.Cells[2,j]);
+                stlong := endat - startat + 1;
+                fldno := StrToInt(FmtGrid.Cells[0,j]);
+                StrValues[fldno-1] := Copy(LineStr,startat,stlong);
+                valcount := valcount + 1;
+            end; // next j
+            LineStr := '';
+        end; // next line
+    end // not yet at eof
+    else done := true;
+    if valcount <> NoFlds then
+    begin
+        ShowMessage('ERROR! Mismatched no. fields and actual record data.');
+        done := true;
+    end;
+    GetFmtValues := done;
+end;
+//-----------------------------------------------------------------------
+
+procedure TFileExtractFrm.TypeBoxChange(Sender: TObject);
+var
+    index : integer;
+    row, col : integer;
+
+begin
+    index := TypeBox.ItemIndex;
+    row := FmtGrid.Row;
+    col := FmtGrid.Col;
+    FmtGrid.Cells[col,row] := IntToStr(index);
+end;
+
+//-------------------------------------------------------------------------
+
+initialization
+  {$i FILEEXTRACTUNIT.lrs}
+  {$i FILEEXTRACTUNIT.lrs}
+
+end.
--- a/applications/lazstats/source_orig/FILEEXTRACTUNIT.lfm
+++ b/applications/lazstats/source_orig/FILEEXTRACTUNIT.lfm
@ -0,0 +1,255 @@
+object FileExtractFrm: TFileExtractFrm
+  Left = 160
+  Height = 509
+  Top = 713
+  Width = 435
+  HelpContext = 406
+  HorzScrollBar.Page = 434
+  VertScrollBar.Page = 508
+  ActiveControl = NoFieldsEdit
+  Caption = 'File Extraction Procedure'
+  Font.Height = -11
+  Font.Name = 'MS Sans Serif'
+  HelpFile = 'OS2Help.hlp'
+  OnShow = FormShow
+  object Label2: TLabel
+    Left = 8
+    Height = 14
+    Top = 152
+    Width = 132
+    Caption = 'Number of lines per record:'
+    Color = clNone
+    ParentColor = False
+  end
+  object Label3: TLabel
+    Left = 224
+    Height = 14
+    Top = 152
+    Width = 170
+    Caption = 'No. of fields (variables) per record:'
+    Color = clNone
+    ParentColor = False
+  end
+  object Label4: TLabel
+    Left = 8
+    Height = 14
+    Top = 176
+    Width = 192
+    Caption = 'Sequence number of key selection field:'
+    Color = clNone
+    ParentColor = False
+  end
+  object Label5: TLabel
+    Left = 8
+    Height = 40
+    Top = 200
+    Width = 76
+    Caption = 'Selection Value (Including Dec. Fraction):'
+    Color = clNone
+    ParentColor = False
+    WordWrap = True
+  end
+  object Label1: TLabel
+    Left = 272
+    Height = 14
+    Top = 424
+    Width = 94
+    Caption = 'Records Retrieved:'
+    Color = clNone
+    ParentColor = False
+  end
+  object Label6: TLabel
+    Left = 8
+    Height = 14
+    Top = 424
+    Width = 96
+    Caption = 'Records Processed:'
+    Color = clNone
+    ParentColor = False
+  end
+  object Memo1: TMemo
+    Left = 24
+    Height = 113
+    Width = 377
+    Lines.Strings = (
+      'This procedure is used to extract records from files too large to read directly '
+      'into the data grid.  The data grid can hold about 100,000 records.  If your file'
+      'is larger but you will not be processing all records, you may extract sub-groups'
+      'of records using a "key" field, e.g. a group identification number.  The records'
+      'extracted will be placed into the data grid as if you had entered them via the'
+      'keyboard.  You may then save the sub-file, process it, etc. as any other file.  If'
+      'you have multiple groups to extract, repeat pressing the Extract button until all'
+      'sub-files you need are placed into the data grid.  Press return to continue.'
+    )
+    TabOrder = 4
+  end
+  object NoLinesEdit: TEdit
+    Left = 144
+    Height = 21
+    Top = 152
+    Width = 25
+    TabOrder = 5
+  end
+  object NoFieldsEdit: TEdit
+    Left = 392
+    Height = 21
+    Top = 152
+    Width = 25
+    TabOrder = 0
+  end
+  object FormatGrp: TRadioGroup
+    Left = 272
+    Height = 81
+    Top = 176
+    Width = 145
+    AutoFill = True
+    Caption = 'Record Format:'
+    ChildSizing.LeftRightSpacing = 6
+    ChildSizing.TopBottomSpacing = 6
+    ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
+    ChildSizing.EnlargeVertical = crsHomogenousChildResize
+    ChildSizing.ShrinkHorizontal = crsScaleChilds
+    ChildSizing.ShrinkVertical = crsScaleChilds
+    ChildSizing.Layout = cclLeftToRightThenTopToBottom
+    ChildSizing.ControlsPerLine = 1
+    Items.Strings = (
+      'Tab seperated fields'
+      'comma seperated fields'
+      'space seperated fields'
+      'User specified format'
+    )
+    OnClick = FormatGrpClick
+    TabOrder = 3
+  end
+  object KeyVarNoEdit: TEdit
+    Left = 200
+    Height = 21
+    Top = 176
+    Width = 25
+    TabOrder = 1
+  end
+  object ValueEdit: TEdit
+    Left = 112
+    Height = 21
+    Top = 208
+    Width = 113
+    TabOrder = 2
+  end
+  object LabelsChk: TCheckBox
+    Left = 8
+    Height = 13
+    Top = 248
+    Width = 207
+    Caption = 'The first record contains variable labels.'
+    TabOrder = 6
+  end
+  object FmtGrid: TStringGrid
+    Left = 8
+    Height = 121
+    Top = 296
+    Width = 409
+    ColCount = 6
+    FixedColor = clBtnFace
+    FixedCols = 0
+    FixedRows = 0
+    GridLineWidth = 0
+    Options = [goFixedVertLine, goFixedHorzLine, goVertLine, goHorzLine, goColMoving, goEditing, goTabs]
+    RowCount = 5
+    ScrollBars = ssAutoBoth
+    TabOrder = 7
+    TabStop = True
+  end
+  object CancelBtn: TButton
+    Left = 160
+    Height = 25
+    Top = 448
+    Width = 57
+    BorderSpacing.InnerBorder = 4
+    Caption = 'Cancel'
+    ModalResult = 2
+    OnClick = CancelBtnClick
+    TabOrder = 8
+  end
+  object OKBtn: TButton
+    Left = 360
+    Height = 25
+    Top = 448
+    Width = 57
+    BorderSpacing.InnerBorder = 4
+    Caption = 'Return'
+    ModalResult = 1
+    OnClick = OKBtnClick
+    TabOrder = 9
+  end
+  object ResetBtn: TButton
+    Left = 224
+    Height = 25
+    Top = 448
+    Width = 57
+    BorderSpacing.InnerBorder = 4
+    Caption = 'Reset'
+    OnClick = ResetBtnClick
+    TabOrder = 10
+  end
+  object ExtractBtn: TButton
+    Left = 288
+    Height = 25
+    Top = 448
+    Width = 65
+    BorderSpacing.InnerBorder = 4
+    Caption = 'Extract'
+    OnClick = ExtractBtnClick
+    TabOrder = 11
+  end
+  object FileSelBtn: TButton
+    Left = 8
+    Height = 25
+    Top = 120
+    Width = 201
+    BorderSpacing.InnerBorder = 4
+    Caption = 'Press to Select a Huge File for Extraction'
+    OnClick = FileSelBtnClick
+    TabOrder = 12
+  end
+  object NoGotEdit: TEdit
+    Left = 368
+    Height = 21
+    Top = 424
+    Width = 49
+    TabOrder = 13
+    Text = 'NoGotEdit'
+  end
+  object RecdReadEdit: TEdit
+    Left = 104
+    Height = 21
+    Top = 424
+    Width = 65
+    TabOrder = 14
+    Text = 'RecdReadEdit'
+  end
+  object TypeBox: TComboBox
+    Left = 208
+    Height = 21
+    Top = 272
+    Width = 57
+    AutoCompleteText = [cbactEndOfLineComplete, cbactSearchAscending]
+    ItemHeight = 13
+    Items.Strings = (
+      '(I)nteger'
+      '(F)loating point'
+      '(S)tring'
+      '(M)oney'
+      '(D)ate'
+    )
+    MaxLength = 0
+    OnChange = TypeBoxChange
+    TabOrder = 15
+    Text = 'Type'
+  end
+  object OpenDialog1: TOpenDialog
+    Title = 'Open existing file'
+    FilterIndex = 0
+    left = 240
+    top = 192
+  end
+end
--- a/applications/lazstats/source_orig/FILEEXTRACTUNIT.lrs
+++ b/applications/lazstats/source_orig/FILEEXTRACTUNIT.lrs
@ -0,0 +1,80 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TFileExtractFrm','FORMDATA',[
+  'TPF0'#15'TFileExtractFrm'#14'FileExtractFrm'#4'Left'#3#160#0#6'Height'#3#253
+  +#1#3'Top'#3#201#2#5'Width'#3#179#1#11'HelpContext'#3#150#1#18'HorzScrollBar.'
+  +'Page'#3#178#1#18'VertScrollBar.Page'#3#252#1#13'ActiveControl'#7#12'NoField'
+  +'sEdit'#7'Caption'#6#25'File Extraction Procedure'#11'Font.Height'#2#245#9'F'
+  +'ont.Name'#6#13'MS Sans Serif'#8'HelpFile'#6#11'OS2Help.hlp'#6'OnShow'#7#8'F'
+  +'ormShow'#0#6'TLabel'#6'Label2'#4'Left'#2#8#6'Height'#2#14#3'Top'#3#152#0#5
+  +'Width'#3#132#0#7'Caption'#6#27'Number of lines per record:'#5'Color'#7#6'cl'
+  +'None'#11'ParentColor'#8#0#0#6'TLabel'#6'Label3'#4'Left'#3#224#0#6'Height'#2
+  +#14#3'Top'#3#152#0#5'Width'#3#170#0#7'Caption'#6'%No. of fields (variables) '
+  +'per record:'#5'Color'#7#6'clNone'#11'ParentColor'#8#0#0#6'TLabel'#6'Label4'
+  +#4'Left'#2#8#6'Height'#2#14#3'Top'#3#176#0#5'Width'#3#192#0#7'Caption'#6'''S'
+  +'equence number of key selection field:'#5'Color'#7#6'clNone'#11'ParentColor'
+  +#8#0#0#6'TLabel'#6'Label5'#4'Left'#2#8#6'Height'#2'('#3'Top'#3#200#0#5'Width'
+  +#2'L'#7'Caption'#6'*Selection Value (Including Dec. Fraction):'#5'Color'#7#6
+  +'clNone'#11'ParentColor'#8#8'WordWrap'#9#0#0#6'TLabel'#6'Label1'#4'Left'#3#16
+  +#1#6'Height'#2#14#3'Top'#3#168#1#5'Width'#2'^'#7'Caption'#6#18'Records Retri'
+  +'eved:'#5'Color'#7#6'clNone'#11'ParentColor'#8#0#0#6'TLabel'#6'Label6'#4'Lef'
+  +'t'#2#8#6'Height'#2#14#3'Top'#3#168#1#5'Width'#2'`'#7'Caption'#6#18'Records '
+  +'Processed:'#5'Color'#7#6'clNone'#11'ParentColor'#8#0#0#5'TMemo'#5'Memo1'#4
+  +'Left'#2#24#6'Height'#2'q'#5'Width'#3'y'#1#13'Lines.Strings'#1#6'PThis proce'
+  +'dure is used to extract records from files too large to read directly '#6'P'
+  +'into the data grid.  The data grid can hold about 100,000 records.  If your'
+  +' file'#6'Pis larger but you will not be processing all records, you may ext'
+  +'ract sub-groups'#6'Pof records using a "key" field, e.g. a group identifica'
+  +'tion number.  The records'#6'Nextracted will be placed into the data grid a'
+  +'s if you had entered them via the'#6'Rkeyboard.  You may then save the sub-'
+  +'file, process it, etc. as any other file.  If'#6'Qyou have multiple groups '
+  +'to extract, repeat pressing the Extract button until all'#6'Lsub-files you '
+  +'need are placed into the data grid.  Press return to continue.'#0#8'TabOrde'
+  +'r'#2#4#0#0#5'TEdit'#11'NoLinesEdit'#4'Left'#3#144#0#6'Height'#2#21#3'Top'#3
+  +#152#0#5'Width'#2#25#8'TabOrder'#2#5#0#0#5'TEdit'#12'NoFieldsEdit'#4'Left'#3
+  +#136#1#6'Height'#2#21#3'Top'#3#152#0#5'Width'#2#25#8'TabOrder'#2#0#0#0#11'TR'
+  +'adioGroup'#9'FormatGrp'#4'Left'#3#16#1#6'Height'#2'Q'#3'Top'#3#176#0#5'Widt'
+  +'h'#3#145#0#8'AutoFill'#9#7'Caption'#6#14'Record Format:'#28'ChildSizing.Lef'
+  +'tRightSpacing'#2#6#28'ChildSizing.TopBottomSpacing'#2#6#29'ChildSizing.Enla'
+  +'rgeHorizontal'#7#24'crsHomogenousChildResize'#27'ChildSizing.EnlargeVertica'
+  +'l'#7#24'crsHomogenousChildResize'#28'ChildSizing.ShrinkHorizontal'#7#14'crs'
+  +'ScaleChilds'#26'ChildSizing.ShrinkVertical'#7#14'crsScaleChilds'#18'ChildSi'
+  +'zing.Layout'#7#29'cclLeftToRightThenTopToBottom'#27'ChildSizing.ControlsPer'
+  +'Line'#2#1#13'Items.Strings'#1#6#20'Tab seperated fields'#6#22'comma seperat'
+  +'ed fields'#6#22'space seperated fields'#6#21'User specified format'#0#7'OnC'
+  +'lick'#7#14'FormatGrpClick'#8'TabOrder'#2#3#0#0#5'TEdit'#12'KeyVarNoEdit'#4
+  +'Left'#3#200#0#6'Height'#2#21#3'Top'#3#176#0#5'Width'#2#25#8'TabOrder'#2#1#0
+  +#0#5'TEdit'#9'ValueEdit'#4'Left'#2'p'#6'Height'#2#21#3'Top'#3#208#0#5'Width'
+  +#2'q'#8'TabOrder'#2#2#0#0#9'TCheckBox'#9'LabelsChk'#4'Left'#2#8#6'Height'#2
+  +#13#3'Top'#3#248#0#5'Width'#3#207#0#7'Caption'#6'*The first record contains '
+  +'variable labels.'#8'TabOrder'#2#6#0#0#11'TStringGrid'#7'FmtGrid'#4'Left'#2#8
+  +#6'Height'#2'y'#3'Top'#3'('#1#5'Width'#3#153#1#8'ColCount'#2#6#10'FixedColor'
+  +#7#9'clBtnFace'#9'FixedCols'#2#0#9'FixedRows'#2#0#13'GridLineWidth'#2#0#7'Op'
+  +'tions'#11#15'goFixedVertLine'#15'goFixedHorzLine'#10'goVertLine'#10'goHorzL'
+  +'ine'#11'goColMoving'#9'goEditing'#6'goTabs'#0#8'RowCount'#2#5#10'ScrollBars'
+  +#7#10'ssAutoBoth'#8'TabOrder'#2#7#7'TabStop'#9#0#0#7'TButton'#9'CancelBtn'#4
+  +'Left'#3#160#0#6'Height'#2#25#3'Top'#3#192#1#5'Width'#2'9'#25'BorderSpacing.'
+  +'InnerBorder'#2#4#7'Caption'#6#6'Cancel'#11'ModalResult'#2#2#7'OnClick'#7#14
+  +'CancelBtnClick'#8'TabOrder'#2#8#0#0#7'TButton'#5'OKBtn'#4'Left'#3'h'#1#6'He'
+  +'ight'#2#25#3'Top'#3#192#1#5'Width'#2'9'#25'BorderSpacing.InnerBorder'#2#4#7
+  +'Caption'#6#6'Return'#11'ModalResult'#2#1#7'OnClick'#7#10'OKBtnClick'#8'TabO'
+  +'rder'#2#9#0#0#7'TButton'#8'ResetBtn'#4'Left'#3#224#0#6'Height'#2#25#3'Top'#3
+  +#192#1#5'Width'#2'9'#25'BorderSpacing.InnerBorder'#2#4#7'Caption'#6#5'Reset'
+  +#7'OnClick'#7#13'ResetBtnClick'#8'TabOrder'#2#10#0#0#7'TButton'#10'ExtractBt'
+  +'n'#4'Left'#3' '#1#6'Height'#2#25#3'Top'#3#192#1#5'Width'#2'A'#25'BorderSpac'
+  +'ing.InnerBorder'#2#4#7'Caption'#6#7'Extract'#7'OnClick'#7#15'ExtractBtnClic'
+  +'k'#8'TabOrder'#2#11#0#0#7'TButton'#10'FileSelBtn'#4'Left'#2#8#6'Height'#2#25
+  +#3'Top'#2'x'#5'Width'#3#201#0#25'BorderSpacing.InnerBorder'#2#4#7'Caption'#6
+  ,'*Press to Select a Huge File for Extraction'#7'OnClick'#7#15'FileSelBtnClic'
+  +'k'#8'TabOrder'#2#12#0#0#5'TEdit'#9'NoGotEdit'#4'Left'#3'p'#1#6'Height'#2#21
+  +#3'Top'#3#168#1#5'Width'#2'1'#8'TabOrder'#2#13#4'Text'#6#9'NoGotEdit'#0#0#5
+  +'TEdit'#12'RecdReadEdit'#4'Left'#2'h'#6'Height'#2#21#3'Top'#3#168#1#5'Width'
+  +#2'A'#8'TabOrder'#2#14#4'Text'#6#12'RecdReadEdit'#0#0#9'TComboBox'#7'TypeBox'
+  +#4'Left'#3#208#0#6'Height'#2#21#3'Top'#3#16#1#5'Width'#2'9'#16'AutoCompleteT'
+  +'ext'#11#22'cbactEndOfLineComplete'#20'cbactSearchAscending'#0#10'ItemHeight'
+  +#2#13#13'Items.Strings'#1#6#9'(I)nteger'#6#16'(F)loating point'#6#8'(S)tring'
+  +#6#7'(M)oney'#6#6'(D)ate'#0#9'MaxLength'#2#0#8'OnChange'#7#13'TypeBoxChange'
+  +#8'TabOrder'#2#15#4'Text'#6#4'Type'#0#0#11'TOpenDialog'#11'OpenDialog1'#5'Ti'
+  +'tle'#6#18'Open existing file'#11'FilterIndex'#2#0#4'left'#3#240#0#3'top'#3
+  +#192#0#0#0#0
+]);
--- a/applications/lazstats/source_orig/equationunit.lfm
+++ b/applications/lazstats/source_orig/equationunit.lfm
@ -0,0 +1,191 @@
+object EquationForm: TEquationForm
+  Left = 244
+  Height = 396
+  Top = 138
+  Width = 592
+  Caption = 'Equation Editor'
+  ClientHeight = 396
+  ClientWidth = 592
+  OnShow = ResetBtnClick
+  LCLVersion = '0.9.30'
+  object Memo1: TMemo
+    Left = 7
+    Height = 184
+    Top = 8
+    Width = 569
+    Lines.Strings = (
+      'You can create a new variable as a combination of other existing variables with this procedure.'
+      'First, enter the name of the new variable in the area labeled "New Variable".'
+      'Next, enter up to three values for each entry in your equation by selecting an operation, function or'
+      'variable from the "drop-down" boxes.   You can select:'
+      '(a)   An operation code (+,-,* or /) except for the first one which should be a function or variable name.'
+      '(b)   A function such as sin, cos, sqrt, etc. can be entered first followed by the variable to be acted upon.'
+      '(c)   A variable name from the list of available variables in the drop-down list of variables.'
+      '(d)   For each variable to be entered, click the "Next Entry" button.  Following the first entry, an '
+      '        operation code must be the first entry.'
+      'When done, click the "Finished" button followed by a click of the "Compute button".  An image of the'
+      'completed function will be displayed before the new values are created.'
+    )
+    TabOrder = 0
+  end
+  object Label1: TLabel
+    Left = 8
+    Height = 16
+    Top = 250
+    Width = 108
+    Caption = 'New Variable Name:'
+    ParentColor = False
+  end
+  object NewVarEdit: TEdit
+    Left = 8
+    Height = 23
+    Top = 275
+    Width = 127
+    TabOrder = 1
+    Text = 'NewVarEdit'
+  end
+  object Label2: TLabel
+    Left = 145
+    Height = 16
+    Top = 278
+    Width = 9
+    Caption = '='
+    ParentColor = False
+  end
+  object OpEdit: TEdit
+    Left = 161
+    Height = 23
+    Top = 275
+    Width = 96
+    TabOrder = 2
+    Text = 'OpEdit'
+  end
+  object FuncEdit: TEdit
+    Left = 265
+    Height = 23
+    Top = 275
+    Width = 136
+    TabOrder = 3
+    Text = 'FuncEdit'
+  end
+  object VarEdit: TEdit
+    Left = 409
+    Height = 23
+    Top = 275
+    Width = 168
+    TabOrder = 4
+    Text = 'VarEdit'
+  end
+  object OpsCombo: TComboBox
+    Left = 162
+    Height = 23
+    Top = 227
+    Width = 94
+    AutoDropDown = True
+    ItemHeight = 15
+    Items.Strings = (
+      '+'
+      '-'
+      '*'
+      '/'
+      ''
+    )
+    OnClick = OpsComboClick
+    OnSelect = OpsComboSelect
+    TabOrder = 5
+  end
+  object FunctionCombo: TComboBox
+    Left = 265
+    Height = 23
+    Top = 226
+    Width = 134
+    AutoDropDown = True
+    ItemHeight = 15
+    Items.Strings = (
+      'sqr'
+      'sqrt'
+      'sin'
+      'cos'
+      'tan'
+      'asin'
+      'acos'
+      'atan'
+      'log10'
+      'ln'
+      'exp'
+      '1 / X'
+      ''
+    )
+    OnClick = FunctionComboClick
+    OnSelect = FunctionComboSelect
+    TabOrder = 6
+  end
+  object VarCombo: TComboBox
+    Left = 407
+    Height = 23
+    Top = 224
+    Width = 169
+    AutoDropDown = True
+    ItemHeight = 15
+    OnClick = VarComboClick
+    OnSelect = VarComboSelect
+    TabOrder = 7
+    Text = 'VarCombo'
+  end
+  object ResetBtn: TButton
+    Left = 10
+    Height = 32
+    Top = 354
+    Width = 87
+    Caption = 'Reset'
+    OnClick = ResetBtnClick
+    TabOrder = 8
+  end
+  object CancelBtn: TButton
+    Left = 161
+    Height = 32
+    Top = 354
+    Width = 87
+    Caption = 'Cancel'
+    ModalResult = 2
+    OnClick = CancelBtnClick
+    TabOrder = 9
+  end
+  object ComputeBtn: TButton
+    Left = 312
+    Height = 32
+    Top = 354
+    Width = 87
+    Caption = 'Compute'
+    OnClick = ComputeBtnClick
+    TabOrder = 10
+  end
+  object ReturnBnt: TButton
+    Left = 489
+    Height = 32
+    Top = 354
+    Width = 87
+    Caption = 'Return'
+    ModalResult = 1
+    OnClick = ReturnBntClick
+    TabOrder = 11
+  end
+  object NextBtn: TButton
+    Left = 115
+    Height = 29
+    Top = 313
+    Width = 140
+    Caption = 'Continue for next entry'
+    OnClick = NextBtnClick
+    TabOrder = 12
+  end
+  object FinishedBtn: TButton
+    Left = 297
+    Height = 29
+    Top = 312
+    Width = 132
+    Caption = 'Finished'
+    OnClick = FinishedBtnClick
+    TabOrder = 13
+  end
+end
--- a/applications/lazstats/source_orig/equationunit.lrs
+++ b/applications/lazstats/source_orig/equationunit.lrs
@ -0,0 +1,57 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TEquationForm','FORMDATA',[
+  'TPF0'#13'TEquationForm'#12'EquationForm'#4'Left'#3#244#0#6'Height'#3#140#1#3
+  +'Top'#3#138#0#5'Width'#3'P'#2#7'Caption'#6#15'Equation Editor'#12'ClientHeig'
+  +'ht'#3#140#1#11'ClientWidth'#3'P'#2#6'OnShow'#7#13'ResetBtnClick'#10'LCLVers'
+  +'ion'#6#6'0.9.30'#0#5'TMemo'#5'Memo1'#4'Left'#2#7#6'Height'#3#184#0#3'Top'#2
+  +#8#5'Width'#3'9'#2#13'Lines.Strings'#1#6'_You can create a new variable as a'
+  +' combination of other existing variables with this procedure.'#6'MFirst, en'
+  +'ter the name of the new variable in the area labeled "New Variable".'#6'eNe'
+  +'xt, enter up to three values for each entry in your equation by selecting a'
+  +'n operation, function or'#6'6variable from the "drop-down" boxes.   You can'
+  +' select:'#6'j(a)   An operation code (+,-,* or /) except for the first one '
+  +'which should be a function or variable name.'#6'm(b)   A function such as s'
+  +'in, cos, sqrt, etc. can be entered first followed by the variable to be act'
+  +'ed upon.'#6'^(c)   A variable name from the list of available variables in '
+  +'the drop-down list of variables.'#6'e(d)   For each variable to be entered,'
+  +' click the "Next Entry" button.  Following the first entry, an '#6'/       '
+  +' operation code must be the first entry.'#6'dWhen done, click the "Finished'
+  +'" button followed by a click of the "Compute button".  An image of the'#6'G'
+  +'completed function will be displayed before the new values are created.'#0#8
+  +'TabOrder'#2#0#0#0#6'TLabel'#6'Label1'#4'Left'#2#8#6'Height'#2#16#3'Top'#3
+  +#250#0#5'Width'#2'l'#7'Caption'#6#18'New Variable Name:'#11'ParentColor'#8#0
+  +#0#5'TEdit'#10'NewVarEdit'#4'Left'#2#8#6'Height'#2#23#3'Top'#3#19#1#5'Width'
+  +#2#127#8'TabOrder'#2#1#4'Text'#6#10'NewVarEdit'#0#0#6'TLabel'#6'Label2'#4'Le'
+  +'ft'#3#145#0#6'Height'#2#16#3'Top'#3#22#1#5'Width'#2#9#7'Caption'#6#1'='#11
+  +'ParentColor'#8#0#0#5'TEdit'#6'OpEdit'#4'Left'#3#161#0#6'Height'#2#23#3'Top'
+  +#3#19#1#5'Width'#2'`'#8'TabOrder'#2#2#4'Text'#6#6'OpEdit'#0#0#5'TEdit'#8'Fun'
+  +'cEdit'#4'Left'#3#9#1#6'Height'#2#23#3'Top'#3#19#1#5'Width'#3#136#0#8'TabOrd'
+  +'er'#2#3#4'Text'#6#8'FuncEdit'#0#0#5'TEdit'#7'VarEdit'#4'Left'#3#153#1#6'Hei'
+  +'ght'#2#23#3'Top'#3#19#1#5'Width'#3#168#0#8'TabOrder'#2#4#4'Text'#6#7'VarEdi'
+  +'t'#0#0#9'TComboBox'#8'OpsCombo'#4'Left'#3#162#0#6'Height'#2#23#3'Top'#3#227
+  +#0#5'Width'#2'^'#12'AutoDropDown'#9#10'ItemHeight'#2#15#13'Items.Strings'#1#6
+  +#1'+'#6#1'-'#6#1'*'#6#1'/'#6#0#0#7'OnClick'#7#13'OpsComboClick'#8'OnSelect'#7
+  +#14'OpsComboSelect'#8'TabOrder'#2#5#0#0#9'TComboBox'#13'FunctionCombo'#4'Lef'
+  +'t'#3#9#1#6'Height'#2#23#3'Top'#3#226#0#5'Width'#3#134#0#12'AutoDropDown'#9
+  +#10'ItemHeight'#2#15#13'Items.Strings'#1#6#3'sqr'#6#4'sqrt'#6#3'sin'#6#3'cos'
+  +#6#3'tan'#6#4'asin'#6#4'acos'#6#4'atan'#6#5'log10'#6#2'ln'#6#3'exp'#6#5'1 / '
+  +'X'#6#0#0#7'OnClick'#7#18'FunctionComboClick'#8'OnSelect'#7#19'FunctionCombo'
+  +'Select'#8'TabOrder'#2#6#0#0#9'TComboBox'#8'VarCombo'#4'Left'#3#151#1#6'Heig'
+  +'ht'#2#23#3'Top'#3#224#0#5'Width'#3#169#0#12'AutoDropDown'#9#10'ItemHeight'#2
+  +#15#7'OnClick'#7#13'VarComboClick'#8'OnSelect'#7#14'VarComboSelect'#8'TabOrd'
+  +'er'#2#7#4'Text'#6#8'VarCombo'#0#0#7'TButton'#8'ResetBtn'#4'Left'#2#10#6'Hei'
+  +'ght'#2' '#3'Top'#3'b'#1#5'Width'#2'W'#7'Caption'#6#5'Reset'#7'OnClick'#7#13
+  +'ResetBtnClick'#8'TabOrder'#2#8#0#0#7'TButton'#9'CancelBtn'#4'Left'#3#161#0#6
+  +'Height'#2' '#3'Top'#3'b'#1#5'Width'#2'W'#7'Caption'#6#6'Cancel'#11'ModalRes'
+  +'ult'#2#2#7'OnClick'#7#14'CancelBtnClick'#8'TabOrder'#2#9#0#0#7'TButton'#10
+  +'ComputeBtn'#4'Left'#3'8'#1#6'Height'#2' '#3'Top'#3'b'#1#5'Width'#2'W'#7'Cap'
+  +'tion'#6#7'Compute'#7'OnClick'#7#15'ComputeBtnClick'#8'TabOrder'#2#10#0#0#7
+  +'TButton'#9'ReturnBnt'#4'Left'#3#233#1#6'Height'#2' '#3'Top'#3'b'#1#5'Width'
+  +#2'W'#7'Caption'#6#6'Return'#11'ModalResult'#2#1#7'OnClick'#7#14'ReturnBntCl'
+  +'ick'#8'TabOrder'#2#11#0#0#7'TButton'#7'NextBtn'#4'Left'#2's'#6'Height'#2#29
+  +#3'Top'#3'9'#1#5'Width'#3#140#0#7'Caption'#6#23'Continue for next entry'#7'O'
+  +'nClick'#7#12'NextBtnClick'#8'TabOrder'#2#12#0#0#7'TButton'#11'FinishedBtn'#4
+  +'Left'#3')'#1#6'Height'#2#29#3'Top'#3'8'#1#5'Width'#3#132#0#7'Caption'#6#8'F'
+  +'inished'#7'OnClick'#7#16'FinishedBtnClick'#8'TabOrder'#2#13#0#0#0
+]);
--- a/applications/lazstats/source_orig/equationunit.pas
+++ b/applications/lazstats/source_orig/equationunit.pas
@ -0,0 +1,289 @@
+unit EquationUnit;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  StdCtrls, MainUnit, Globals, OutPutUnit, DataProcs,
+  DictionaryUnit, contexthelpunit, MatrixLib, Math;
+
+type
+
+  { TEquationForm }
+
+  TEquationForm = class(TForm)
+    FinishedBtn: TButton;
+    NextBtn: TButton;
+    ResetBtn: TButton;
+    CancelBtn: TButton;
+    ComputeBtn: TButton;
+    ReturnBnt: TButton;
+    VarCombo: TComboBox;
+    FunctionCombo: TComboBox;
+    OpsCombo: TComboBox;
+    VarEdit: TEdit;
+    FuncEdit: TEdit;
+    OpEdit: TEdit;
+    Label2: TLabel;
+    NewVarEdit: TEdit;
+    Label1: TLabel;
+    Memo1: TMemo;
+    procedure CancelBtnClick(Sender: TObject);
+    procedure ComputeBtnClick(Sender: TObject);
+    procedure FinishedBtnClick(Sender: TObject);
+    procedure FunctionComboClick(Sender: TObject);
+    procedure FunctionComboSelect(Sender: TObject);
+    procedure NextBtnClick(Sender: TObject);
+    procedure OpsComboClick(Sender: TObject);
+    procedure OpsComboSelect(Sender: TObject);
+    procedure ResetBtnClick(Sender: TObject);
+    procedure ReturnBntClick(Sender: TObject);
+    procedure VarComboClick(Sender: TObject);
+    procedure VarComboSelect(Sender: TObject);
+  private
+    { private declarations }
+    operations, functions, variables : StrDyneVec;
+    NoEntries : integer;
+    selected : IntDyneVec;
+  public
+    { public declarations }
+  end; 
+
+var
+  EquationForm: TEquationForm;
+
+implementation
+
+{ TEquationForm }
+
+procedure TEquationForm.ResetBtnClick(Sender: TObject);
+VAR i : integer;
+begin
+  NewVarEdit.Text := '';
+  OpEdit.Text := '';
+  FuncEdit.Text := '';
+  VarEdit.Text := '';
+  OpsCombo.Text := 'Operations';
+  FunctionCombo.Text := 'Functions';
+  VarCombo.Clear;
+  for i := 1 to NoVariables do
+      VarCombo.Items.Add(OS3MainFrm.DataGrid.Cells[i,0]);
+  VarCombo.Text := 'Variables';
+  VarCombo.DropDownCount := NoVariables;
+  SetLength(operations,NoVariables);
+  SetLength(functions,NoVariables);
+  SetLength(variables,NoVariables);
+  NoEntries := 0;
+end;
+
+procedure TEquationForm.ReturnBntClick(Sender: TObject);
+begin
+  variables := nil;
+  functions := nil;
+  operations := nil;
+end;
+
+procedure TEquationForm.VarComboClick(Sender: TObject);
+VAR index : integer;
+begin
+  index := VarCombo.ItemIndex;
+  if index < 0 then exit;
+  VarEdit.Text := VarCombo.Items.Strings[index];
+  VarCombo.ItemIndex := -1;
+end;
+
+procedure TEquationForm.VarComboSelect(Sender: TObject);
+VAR index : integer;
+begin
+  index := VarCombo.ItemIndex;
+  if index < 0 then exit;
+  VarEdit.Text := VarCombo.Items.Strings[index];
+  VarCombo.ItemIndex := -1;
+end;
+
+procedure TEquationForm.NextBtnClick(Sender: TObject);
+begin
+  operations[NoEntries] := OpEdit.Text;
+  if ((NoEntries > 0) and (operations[NoEntries] = '') )then
+  begin
+     ShowMessage('ERROR-No operation selected - enter again!');
+     exit;
+  end;
+  functions[NoEntries] := FuncEdit.Text;
+  variables[NoEntries] := VarEdit.Text;
+  if (variables[NoEntries] = '') then
+  begin
+     ShowMessage('ERROR-No variable entered - enter again!');
+     exit;
+  end;
+  NoEntries := NoEntries + 1;
+  OpEdit.Text := '';
+  FuncEdit.Text := '';
+  VarEdit.Text := '';
+  OpsCombo.Text := 'Operations';
+  FunctionCombo.Text := 'Functions';
+  VarCombo.Text := 'Variables';
+end;
+
+procedure TEquationForm.OpsComboClick(Sender: TObject);
+VAR index : integer;
+begin
+  index := OpsCombo.ItemIndex;
+  if index < 0 then exit;
+  OpEdit.Text := OpsCombo.Items.Strings[index];
+  OpsCombo.ItemIndex := -1;
+end;
+
+procedure TEquationForm.OpsComboSelect(Sender: TObject);
+VAR index : integer;
+begin
+  index := OpsCombo.ItemIndex;
+  if index < 0 then exit;
+  OpEdit.Text := OpsCombo.Items.Strings[index];
+  OpsCombo.ItemIndex := -1;
+end;
+
+procedure TEquationForm.FinishedBtnClick(Sender: TObject);
+begin
+  operations[NoEntries] := OpEdit.Text;
+  if ((NoEntries > 0) and (operations[NoEntries] = '')) then
+  begin
+     ShowMessage('ERROR-No operation selected - enter again!');
+     exit;
+  end;
+  functions[NoEntries] := FuncEdit.Text;
+  variables[NoEntries] := VarEdit.Text;
+  if (variables[NoEntries] = '') then
+  begin
+     ShowMessage('ERROR-No variable entered - enter again!');
+     exit;
+  end;
+  NoEntries := NoEntries + 1;
+  OpsCombo.Text := 'Operations';
+  FunctionCombo.Text := 'Functions';
+  VarCombo.Text := 'Variables';
+end;
+
+procedure TEquationForm.FunctionComboClick(Sender: TObject);
+VAR index : integer;
+begin
+  index := FunctionCombo.ItemIndex;
+  if index < 0 then exit;
+  FuncEdit.Text := FunctionCombo.Items.Strings[index];
+  FunctionCombo.ItemIndex := -1;
+end;
+
+procedure TEquationForm.FunctionComboSelect(Sender: TObject);
+VAR index : integer;
+begin
+  index := FunctionCombo.ItemIndex;
+  if index < 0 then exit;
+  FuncEdit.Text := FunctionCombo.Items.Strings[index];
+  FunctionCombo.ItemIndex := -1;
+end;
+
+procedure TEquationForm.ComputeBtnClick(Sender: TObject);
+VAR
+	cellstring, outline : string;
+	opsitem, funcsitem, col, newcol, i, j, k : integer;
+	newvalue, xvalue : double;
+begin
+  // get position of selected variables from the main grid
+  SetLength(selected,NoEntries);
+  for i := 1 to NoVariables do
+  begin
+      cellstring := Trim(OS3MainFrm.DataGrid.Cells[i,0]);
+      for j := 0 to NoEntries - 1 do
+          if (cellstring = variables[j]) then selected[j] := i;
+  end;
+
+  // create a new variable in the main grid
+  col := NoVariables + 1;
+  newcol := col;
+  DictionaryFrm.NewVar(col);
+  OS3MainFrm.DataGrid.Cells[col,0] := NewVarEdit.Text;
+  DictionaryFrm.DictGrid.Cells[1,col] := NewVarEdit.Text;
+
+  // for each subject obtain selected variable values and add to newvalue
+  for i := 1 to NoCases do  // subject loop
+  begin
+      newvalue := 0.0;
+      for j := 0 to NoEntries - 1 do // list loop
+      begin
+          col := selected[j];
+          xvalue := StrToFloat(Trim(OS3MainFrm.DataGrid.Cells[col,i]));
+          if (functions[j] <> '') then // do the function
+          begin
+              for k := 0 to 11 do // get function number
+              begin
+                  if (functions[j] = FunctionCombo.Items.Strings[k]) then funcsitem := k;
+              end;
+              case (funcsitem) of
+                  0: xvalue *= xvalue;
+                  1: xvalue := sqrt(xvalue);
+                  2: xvalue := sin(xvalue);
+                  3: xvalue := cos(xvalue);
+                  4: xvalue := tan(xvalue);
+                  5: xvalue := arcsin(xvalue);
+                  6: xvalue := arccos(xvalue);
+                  7: xvalue := arctan(xvalue);
+                  8: xvalue := log10(xvalue);
+                  9: xvalue := ln(xvalue);
+                  10: xvalue := exp(xvalue);
+                  11: xvalue := 1.0 / xvalue;
+              end;
+          end; // end if function
+          if (operations[j] = '') then newvalue := newvalue + xvalue
+          else // find operation
+          begin
+               for k := 0 to 3 do
+               begin
+                   if (operations[j] = OpsCombo.Items.Strings[k]) then opsitem := k;
+               end;
+               case (opsitem) of
+                   0: newvalue += xvalue;
+                   1: newvalue -= xvalue;
+                   2: newvalue *= xvalue;
+                   3: newvalue /= xvalue;
+               end;
+          end; // end else
+      end; // end jth variable
+      OS3MainFrm.DataGrid.Cells[newcol,i] := floattostr(newvalue);
+      FormatCell(newcol,i);
+  end; // next subject
+
+  OutPutFrm.RichEdit.Clear;
+  OutPutFrm.RichEdit.Lines.Add('Equation Used for the New Variable');
+  OutPutFrm.RichEdit.Lines.Add('');
+  outline := NewVarEdit.Text;
+  outline := outline +' = ';
+  for j := 0 to NoEntries - 1 do
+  begin
+      outline := outline + functions[j];
+      outline := outline + ' ';
+      outline := outline + variables[j];
+      outline := outline + ' ';
+      if (j < NoEntries-1) then
+      begin
+         outline := outline + operations[j+1];
+         outline := outline + ' ';
+      end;
+  end;
+  OutPutFrm.RichEdit.Lines.Add(outline);
+  OutPutFrm.ShowModal;
+end;
+
+procedure TEquationForm.CancelBtnClick(Sender: TObject);
+begin
+  variables := nil;
+  functions := nil;
+  operations := nil;
+end;
+
+initialization
+  {$I equationunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/errorcurvesunit.pas
+++ b/applications/lazstats/source_orig/errorcurvesunit.pas
@ -0,0 +1,330 @@
+unit ERRORCURVESUNIT;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs,
+  StdCtrls, ExtCtrls, BlankFrmUnit, OutPutUnit, FunctionsLib, Globals;
+
+type
+    TwoCol = array[1..2,1..100] of double;
+
+type
+
+  { TErrorCurvesFrm }
+
+  TErrorCurvesFrm = class(TForm)
+    NullType: TRadioGroup;
+    ResetBtn: TButton;
+    CancelBtn: TButton;
+    ComputeBtn: TButton;
+    ReturnBtn: TButton;
+    NullMeanEdit: TEdit;
+    AltMeanEdit: TEdit;
+    SDEdit: TEdit;
+    TypeIEdit: TEdit;
+    TypeIIEdit: TEdit;
+    Label1: TLabel;
+    Label2: TLabel;
+    Label3: TLabel;
+    Label4: TLabel;
+    Label5: TLabel;
+    procedure ComputeBtnClick(Sender: TObject);
+    procedure FormShow(Sender: TObject);
+    procedure ResetBtnClick(Sender: TObject);
+  private
+    { private declarations }
+    procedure PltPts(realpts : TwoCol;
+                   Xmax, Xmin, Ymax, Ymin : double;
+                   Npts, XaxisStart, YaxisStart, XaxisRange : integer;
+                   YaxisRange : integer;
+                   acolor : TColor; Sender : TObject);
+    procedure Hscale(Xmin, Xmax : double; Nsteps : integer;
+                 acolor : TColor; FontSize : integer;
+                 X, Y, Xlength : integer;
+                 charLabel : string; Sender : TObject);
+    procedure Vscale(Ymin, Ymax : double; Nsteps : integer;
+                 acolor : TColor; FontSize : integer;
+                 X, Y, Ylength : integer;
+                 charLabel : string; Sender : TObject);
+    procedure NormPts(zMin, zMax : double; Npts : integer;
+                  VAR realpts : TwoCol;
+                  Sender : TObject);
+
+  public
+    { public declarations }
+  end; 
+
+var
+  ErrorCurvesFrm: TErrorCurvesFrm;
+
+implementation
+
+{ TErrorCurvesFrm }
+
+procedure TErrorCurvesFrm.ResetBtnClick(Sender: TObject);
+begin
+     NullMeanEdit.Text := '';
+     AltMeanEdit.Text := '';
+     SDEdit.Text := '';
+     TypeIEdit.Text := '0.05';
+     TypeIIEdit.Text := '0.05';
+     NullMeanEdit.SetFocus;
+end;
+
+procedure TErrorCurvesFrm.FormShow(Sender: TObject);
+begin
+     ResetBtnClick(self);
+end;
+
+procedure TErrorCurvesFrm.ComputeBtnClick(Sender: TObject);
+var
+    // generate a null and alternate hypothesis for a specified effect
+    // size, Type I error rate and Type II error rate using the normal
+    // distribution z-test. Estimate the N needed.
+    // Uses the Plot.h header file and form  FrmPlot.
+    Clwidth,Clheight,X,Y,XaxisStart,XaxisEnd,YaxisStart,YaxisEnd : integer;
+    Xrange, Yrange, t, range, Nsize: integer;
+    alpha, beta, nullmean, altmean, Diff, StdDev, CriticalX, zalpha : double;
+    zbeta, Xprop, stderrmean, xlow, xhigh : double;
+    valuestr, charLabel : string;
+    realpts : TwoCol;
+begin
+     BlankFrm.Show;
+     BlankFrm.Image1.Canvas.Clear;
+     BlankFrm.Image1.Canvas.Pen.Color := clBlack;
+     BlankFrm.Image1.Canvas.Brush.Color := clWhite;
+     BlankFrm.Image1.Canvas.Clear;
+     BlankFrm.Image1.Canvas.FloodFill(1,1,clWhite,fsborder);
+     alpha := StrToFloat(TypeIEdit.Text);
+     if NullType.ItemIndex = 1 then alpha := alpha / 2.0;
+     beta := StrToFloat(TypeIIEdit.Text);
+     nullmean := StrToFloat(NullMeanEdit.Text);
+     altmean := StrToFloat(AltMeanEdit.Text);
+     StdDev := StrToFloat(SDEdit.Text);
+     zalpha := inversez(1.0 - alpha);
+     zbeta := inversez(1.0 - beta);
+     Diff := abs(nullmean - altmean);
+     Nsize := round((StdDev / Diff) * abs(zbeta + zalpha));
+     Nsize := Nsize * Nsize;
+     CriticalX := zalpha * (StdDev / sqrt(Nsize)) + nullmean;
+     stderrmean := StdDev / sqrt(Nsize);
+     Clwidth :=  BlankFrm.Image1.Width;
+     Clheight := BlankFrm.Image1.Height;
+
+     // Determine X scale and print it
+     YaxisStart := (Clheight * 6) div 10;
+     YaxisEnd := Clheight div 10;
+     Yrange := YaxisStart - YaxisEnd;
+     xlow := nullmean - 4 * stderrmean;
+     xhigh := altmean + 4 * stderrmean;
+     XaxisStart := Clwidth div 8;
+     XaxisEnd := Clwidth - (Clwidth div 8);
+     Xrange := XaxisEnd - XaxisStart;
+     Hscale(xlow, xhigh, 9, clWhite, 8, XaxisStart, YaxisStart, Xrange,'X SCALE',BlankFrm);
+
+     // Create values of the alternative distribution
+     Xprop := ( (nullmean + 4*stderrmean) - xlow) / (xhigh - xlow);
+     range := round(Xprop * Xrange);
+     NormPts(-4.0, 4.0, 100, realpts, self);
+     Xprop := ((altmean - 4 * stderrmean) - xlow) / (xhigh - xlow);
+     X := round((Xprop * Xrange) + XaxisStart); // where to start curve
+     PltPts(realpts, 4.0, -4.0, 0.5, 0.0, 100, X, YaxisStart, range,
+            Yrange, clBlack, self);
+
+     //Draw vertical axis at the critical X value
+     Xprop := (CriticalX - xlow) / (xhigh - xlow);
+     X := round((Xprop * Xrange) + XaxisStart);
+     Y := YaxisStart;
+     BlankFrm.Image1.Canvas.MoveTo(X,Y);
+     BlankFrm.Image1.Canvas.LineTo(X,YaxisEnd);
+     charLabel := 'Critical X = ';
+     valuestr := format('%6.2f',[CriticalX]);
+     charLabel := charLabel + valuestr;
+     t := BlankFrm.Image1.Canvas.TextWidth(charLabel) div 2;
+     BlankFrm.Image1.Canvas.TextOut(X-t,YaxisEnd-15,charLabel);
+
+     // floodfill Alternate distribution area with blue
+     Xprop := (CriticalX - xlow) / (xhigh - xlow);
+     X := round((Xprop * Xrange) + XaxisStart);
+     Y := YaxisStart - 3;
+     BlankFrm.Image1.Canvas.Brush.Color := clBlue;
+     BlankFrm.Image1.Canvas.FloodFill(X-2,Y,clBlack,fsBorder );
+     BlankFrm.Image1.Canvas.Brush.Color := clWhite;
+
+     // Create values of normal curve for null distribution
+     NormPts(-4.0, 4.0, 100, realpts, self);
+     Xprop := ( (nullmean + 4*stderrmean) - xlow) / (xhigh - xlow);
+     range := round(Xprop * Xrange);
+     BlankFrm.Image1.Canvas.Brush.Color := clWhite;
+     PltPts(realpts, 4.0, -4.0, 0.5, 0.0, 100, XaxisStart, YaxisStart, range,
+            Yrange, clBlack, self);
+
+     //Draw vertical axis at null mean
+     Xprop := (nullmean - xlow) / (xhigh - xlow);
+     X := round((Xprop * Xrange) + XaxisStart);
+     Y := YaxisStart;
+     BlankFrm.Image1.Canvas.MoveTo(X,Y);
+     BlankFrm.Image1.Canvas.LineTo(X,YaxisEnd);
+     charLabel := 'Null Mean';
+     t := BlankFrm.Image1.Canvas.TextWidth(charLabel) div 2;
+     BlankFrm.Image1.Canvas.TextOut(X-t,YaxisEnd,charLabel);
+
+     // floodfill alpha area with red
+     Xprop := (CriticalX - xlow) / (xhigh - xlow);
+     X := round((Xprop * Xrange) + XaxisStart);
+     Y := YaxisStart - 3;
+     BlankFrm.Image1.Canvas.Brush.Color := clRed;
+     BlankFrm.Image1.Canvas.FloodFill(X+2,Y,clBlack,fsBorder );
+     BlankFrm.Image1.Canvas.Brush.Color := clWhite;
+
+     //Draw vertical axis at alternative mean
+     BlankFrm.Image1.Canvas.Pen.Color := clBlack;
+     Xprop := (altmean - xlow) / (xhigh - xlow);
+     X := round((Xprop * Xrange) + XaxisStart);
+     Y := YaxisStart;
+     BlankFrm.Image1.Canvas.MoveTo(X,Y);
+     BlankFrm.Image1.Canvas.LineTo(X,YaxisEnd);
+     charLabel := 'Alternative Mean';
+     t := BlankFrm.Image1.Canvas.TextWidth(charLabel) div 2;
+     BlankFrm.Image1.Canvas.TextOut(X-t,YaxisEnd,charLabel);
+
+     // draw the vertical density axis scale values
+     Vscale(0.0, 0.5, 11, clWhite, 10, XaxisStart, YaxisStart, Yrange, 'DENSITY', self);
+
+     // Print Heading
+     charLabel := 'Type I and II Error Areas';
+     BlankFrm.Caption := charLabel;
+     charLabel := 'Alpha := ';
+     charLabel := charLabel + TypeIEdit.Text;
+     charLabel := charLabel + ', Beta := ';
+     charLabel := charLabel + TypeIIEdit.Text;
+     charLabel := charLabel + ', N := ';
+     charLabel := charLabel + IntToStr(Nsize);
+     t := BlankFrm.Image1.Canvas.TextWidth(charLabel);
+     X := round((BlankFrm.Image1.Width / 2) - (t / 2));
+     BlankFrm.Image1.Canvas.TextOut(X,0,charLabel);
+
+     // print z scale for the null distribution
+     Xprop := ( (nullmean + 4*stderrmean) - xlow) / (xhigh - xlow);
+     range := round(Xprop * Xrange);
+     Hscale(-4.0, 4.0, 11, clWhite, 8, XaxisStart, YaxisStart+50, range,'NULL Z SCALE', self);
+
+ end;
+
+procedure TErrorCurvesFrm.PltPts(realpts: TwoCol; Xmax, Xmin, Ymax,
+  Ymin: double; Npts, XaxisStart, YaxisStart, XaxisRange: integer;
+  YaxisRange: integer; acolor: TColor; Sender: TObject);
+var
+   hprop, zprop, z, h : double;
+   i, X, Y : integer;
+   intpts : array[1..100] of TPoint;
+begin
+      for i := 1 to Npts do
+      begin
+          z := realpts[1,i];
+          h := realpts[2,i];
+          zprop := (z - Xmin) / (Xmax - Xmin);
+          X := round((zprop * XaxisRange) + XaxisStart);
+          hprop := (h - Ymin) / (Ymax - Ymin);
+          Y := round(YaxisStart - (hprop * YaxisRange));
+          intpts[i] := Point(X,Y);
+      end;
+      BlankFrm.Image1.Canvas.Pen.Color := acolor;
+      BlankFrm.Image1.Canvas.Polyline(Slice(intpts,Npts - 1));
+end;
+
+procedure TErrorCurvesFrm.Hscale(Xmin, Xmax: double; Nsteps: integer;
+  acolor: TColor; FontSize: integer; X, Y, Xlength: integer; charLabel: string;
+  Sender: TObject);
+var
+   i, TickEnd, Xpos, Ypos, TextX : integer;
+   Xincr, Xval : double;
+   Svalue, Ast : string;
+begin
+    BlankFrm.Image1.Canvas.MoveTo(X,Y);
+    BlankFrm.Image1.Canvas.LineTo(X+Xlength,Y);
+    BlankFrm.Image1.Canvas.Font.Size := FontSize;
+    BlankFrm.Image1.Canvas.Brush.Color := acolor;
+    TickEnd := Y + 10;
+    Xincr := (Xmax - Xmin) / Nsteps;
+    for i := 0 to Nsteps + 1 do
+    begin
+        Xpos := round(((Xlength / Nsteps) * i) + X);
+        BlankFrm.Image1.Canvas.MoveTo(Xpos,Y);
+        BlankFrm.Image1.Canvas.LineTo(Xpos,TickEnd);
+        TextX := Xpos - 8;
+        Xval := Xmin + ( i * Xincr);
+        Svalue := format('%4.2f',[Xval]);
+        Ast := Svalue;
+        BlankFrm.Image1.Canvas.TextOut(TextX, Y+15, Ast);
+    end;
+    // print label below X axis
+    Ypos := Y + 30;
+    Xpos := round((BlankFrm.Image1.Width / 2) - (BlankFrm.Image1.Canvas.TextWidth(charLabel) / 2));
+    BlankFrm.Image1.Canvas.TextOut(Xpos,Ypos,charLabel);
+end;
+
+procedure TErrorCurvesFrm.Vscale(Ymin, Ymax: double; Nsteps: integer;
+  acolor: TColor; FontSize: integer; X, Y, Ylength: integer; charLabel: string;
+  Sender: TObject);
+var
+   TickEnd, Ypos, Xpos, TextY : integer;
+   Yincr, Yval : double;
+   Svalue, symbol, Ast : string;
+   chpixs, i : integer;
+begin
+    BlankFrm.Image1.Canvas.MoveTo(X,Y);
+    BlankFrm.Image1.Canvas.LineTo(X,Y-Ylength);
+    BlankFrm.Image1.Canvas.Font.Size := FontSize;
+    BlankFrm.Image1.Canvas.Brush.Color := acolor;
+    TickEnd := X - 10;
+    Yincr := (Ymax - Ymin) / Nsteps;
+    TextY := 0;
+    for i := 0 to Nsteps + 1 do
+    begin
+        Ypos := round(Y - ((Ylength / Nsteps) * i));
+        BlankFrm.Image1.Canvas.MoveTo(X,Ypos);
+        BlankFrm.Image1.Canvas.LineTo(TickEnd,Ypos);
+        TextY := TickEnd - 30;
+        Yval := Ymin + ( i * Yincr);
+        Svalue := format('%4.2f',[Yval]);
+        Ast := Svalue;
+        BlankFrm.Image1.Canvas.TextOut(TextY, Ypos-8, Ast);
+    end;
+    // print label vertically
+    Xpos := TextY - 15;
+    for i := 1 to Length(charLabel) do
+    begin
+        chpixs := BlankFrm.Image1.Canvas.TextHeight(charLabel);
+        Ypos := round(Y - (Ylength / 2) - ( (Length(charLabel) * chpixs) / 2 ) + (chpixs * i));
+        symbol := charLabel[i];
+//        symbol[2] := 0;
+        BlankFrm.Image1.Canvas.TextOut(Xpos,Ypos,symbol);
+    end;
+end;
+
+procedure TErrorCurvesFrm.NormPts(zMin, zMax: double; Npts: integer;
+  var realpts: TwoCol; Sender: TObject);
+var
+   zIncr, z, h : double;
+   i : integer;
+begin
+     zIncr := (zMax - zMin) / Npts;
+     for i := 1 to Npts do
+     begin
+         z := zMin + (zIncr * i);
+         h := (1.0 / sqrt(2.0 * 3.14159265358979)) *
+              ( 1.0 / exp(z * z / 2.0));
+         realpts[1,i] := z;
+         realpts[2,i] := h;
+     end;
+end;
+
+initialization
+  {$I errorcurvesunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/essayitemunit.lfm
+++ b/applications/lazstats/source_orig/essayitemunit.lfm
@ -0,0 +1,205 @@
+object EssayItemForm: TEssayItemForm
+  Left = 207
+  Height = 499
+  Top = 116
+  Width = 641
+  Caption = 'Essay Item Creation and Editing'
+  ClientHeight = 499
+  ClientWidth = 641
+  OnShow = FormShow
+  LCLVersion = '0.9.30'
+  object jpegBrowseBtn: TButton
+    Left = 7
+    Height = 30
+    Top = 337
+    Width = 118
+    Caption = 'Browse jpeg Images'
+    OnClick = jpegBrowseBtnClick
+    TabOrder = 0
+  end
+  object SelectImageBtn: TButton
+    Left = 10
+    Height = 26
+    Top = 408
+    Width = 112
+    Caption = 'Select Shown Image'
+    OnClick = SelectImageBtnClick
+    TabOrder = 1
+  end
+  object Image1: TImage
+    Left = 138
+    Height = 151
+    Top = 337
+    Width = 211
+  end
+  object ItemSaveBtn: TButton
+    Left = 368
+    Height = 33
+    Top = 336
+    Width = 111
+    Caption = 'Save this item'
+    OnClick = ItemSaveBtnClick
+    TabOrder = 2
+  end
+  object PreviousBtn: TButton
+    Left = 498
+    Height = 32
+    Top = 337
+    Width = 110
+    Caption = 'Show Previous Item'
+    OnClick = PreviousBtnClick
+    TabOrder = 3
+  end
+  object ShowNextBtn: TButton
+    Left = 369
+    Height = 30
+    Top = 392
+    Width = 109
+    Caption = 'Show Next Item'
+    OnClick = ShowNextBtnClick
+    TabOrder = 4
+  end
+  object StartNewBtn: TButton
+    Left = 498
+    Height = 30
+    Top = 392
+    Width = 111
+    Caption = 'Start a new item'
+    OnClick = StartNewBtnClick
+    TabOrder = 5
+  end
+  object ReturnBtn: TButton
+    Left = 432
+    Height = 30
+    Top = 456
+    Width = 111
+    Caption = 'Return'
+    OnClick = ReturnBtnClick
+    TabOrder = 6
+  end
+  object jpeglabel: TLabel
+    Left = 10
+    Height = 16
+    Top = 299
+    Width = 225
+    Caption = 'jpeg photo to display prior to item (if any):'
+    ParentColor = False
+  end
+  object jpegnameEdit: TEdit
+    Left = 240
+    Height = 23
+    Top = 292
+    Width = 372
+    TabOrder = 7
+    Text = 'jpegnameEdit'
+  end
+  object TFItemNoLabel: TLabel
+    Left = 7
+    Height = 16
+    Top = 179
+    Width = 75
+    Caption = 'Item Number:'
+    ParentColor = False
+  end
+  object ItemNoEdit: TEdit
+    Left = 96
+    Height = 23
+    Top = 172
+    Width = 44
+    TabOrder = 8
+    Text = '1'
+  end
+  object ItemCodeLabel: TLabel
+    Left = 176
+    Height = 16
+    Top = 179
+    Width = 93
+    Caption = 'Item Major Code:'
+    ParentColor = False
+  end
+  object MajorCodeEdit: TEdit
+    Left = 280
+    Height = 23
+    Top = 172
+    Width = 41
+    TabOrder = 9
+    Text = '1'
+  end
+  object MinorCodeLabel: TLabel
+    Left = 336
+    Height = 16
+    Top = 177
+    Width = 94
+    Caption = 'Item Minor Code:'
+    ParentColor = False
+  end
+  object MinorCodeEdit: TEdit
+    Left = 440
+    Height = 23
+    Top = 172
+    Width = 45
+    TabOrder = 10
+    Text = '0'
+  end
+  object ItemStemLabel: TLabel
+    Left = 8
+    Height = 16
+    Top = 220
+    Width = 58
+    Caption = 'Item Stem:'
+    ParentColor = False
+  end
+  object ItemStemEdit: TEdit
+    Left = 73
+    Height = 23
+    Top = 213
+    Width = 539
+    TabOrder = 11
+    Text = 'ItemStemEdit'
+  end
+  object AnswerLabel: TLabel
+    Left = 8
+    Height = 16
+    Top = 256
+    Width = 74
+    Caption = 'Short Answer:'
+    ParentColor = False
+  end
+  object AnswerEdit: TEdit
+    Left = 96
+    Height = 23
+    Top = 249
+    Width = 516
+    TabOrder = 12
+  end
+  object Memo1: TMemo
+    Left = 20
+    Height = 133
+    Top = 11
+    Width = 592
+    Lines.Strings = (
+      'Directions:  To create an Essay item, you will need to enter the number of an item code which contains'
+      'both a major code and a minor code.  It is suggested you print all item codes from the options menu on the'
+      'main procedure page of the item banking program.  You can however, browse the Essay items  from this '
+      'form.'
+      'After you have selected an item code number, enter the item stem in the space provided.  Your item can also'
+      'include a jpeg picture prior to the presentation of the item on a test.  To find the image, click the jpeg browse'
+      'button until you see the image you wish to include.  When that item is shown, click the Select button to save'
+      'the name of the image file.'
+    )
+    TabOrder = 13
+  end
+  object CodeBrowseBtn: TButton
+    Left = 502
+    Height = 28
+    Top = 165
+    Width = 106
+    Caption = 'Browse Items'
+    OnClick = CodeBrowseBtnClick
+    TabOrder = 14
+  end
+  object OpenPictureDialog1: TOpenPictureDialog
+    left = 412
+    top = 471
+  end
+end
--- a/applications/lazstats/source_orig/essayitemunit.lrs
+++ b/applications/lazstats/source_orig/essayitemunit.lrs
@ -0,0 +1,60 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TEssayItemForm','FORMDATA',[
+  'TPF0'#14'TEssayItemForm'#13'EssayItemForm'#4'Left'#3#207#0#6'Height'#3#243#1
+  +#3'Top'#2't'#5'Width'#3#129#2#7'Caption'#6#31'Essay Item Creation and Editin'
+  +'g'#12'ClientHeight'#3#243#1#11'ClientWidth'#3#129#2#6'OnShow'#7#8'FormShow'
+  +#10'LCLVersion'#6#6'0.9.30'#0#7'TButton'#13'jpegBrowseBtn'#4'Left'#2#7#6'Hei'
+  +'ght'#2#30#3'Top'#3'Q'#1#5'Width'#2'v'#7'Caption'#6#18'Browse jpeg Images'#7
+  +'OnClick'#7#18'jpegBrowseBtnClick'#8'TabOrder'#2#0#0#0#7'TButton'#14'SelectI'
+  +'mageBtn'#4'Left'#2#10#6'Height'#2#26#3'Top'#3#152#1#5'Width'#2'p'#7'Caption'
+  +#6#18'Select Shown Image'#7'OnClick'#7#19'SelectImageBtnClick'#8'TabOrder'#2
+  +#1#0#0#6'TImage'#6'Image1'#4'Left'#3#138#0#6'Height'#3#151#0#3'Top'#3'Q'#1#5
+  +'Width'#3#211#0#0#0#7'TButton'#11'ItemSaveBtn'#4'Left'#3'p'#1#6'Height'#2'!'
+  +#3'Top'#3'P'#1#5'Width'#2'o'#7'Caption'#6#14'Save this item'#7'OnClick'#7#16
+  +'ItemSaveBtnClick'#8'TabOrder'#2#2#0#0#7'TButton'#11'PreviousBtn'#4'Left'#3
+  +#242#1#6'Height'#2' '#3'Top'#3'Q'#1#5'Width'#2'n'#7'Caption'#6#18'Show Previ'
+  +'ous Item'#7'OnClick'#7#16'PreviousBtnClick'#8'TabOrder'#2#3#0#0#7'TButton'
+  +#11'ShowNextBtn'#4'Left'#3'q'#1#6'Height'#2#30#3'Top'#3#136#1#5'Width'#2'm'#7
+  +'Caption'#6#14'Show Next Item'#7'OnClick'#7#16'ShowNextBtnClick'#8'TabOrder'
+  +#2#4#0#0#7'TButton'#11'StartNewBtn'#4'Left'#3#242#1#6'Height'#2#30#3'Top'#3
+  +#136#1#5'Width'#2'o'#7'Caption'#6#16'Start a new item'#7'OnClick'#7#16'Start'
+  +'NewBtnClick'#8'TabOrder'#2#5#0#0#7'TButton'#9'ReturnBtn'#4'Left'#3#176#1#6
+  +'Height'#2#30#3'Top'#3#200#1#5'Width'#2'o'#7'Caption'#6#6'Return'#7'OnClick'
+  +#7#14'ReturnBtnClick'#8'TabOrder'#2#6#0#0#6'TLabel'#9'jpeglabel'#4'Left'#2#10
+  +#6'Height'#2#16#3'Top'#3'+'#1#5'Width'#3#225#0#7'Caption'#6'-jpeg photo to d'
+  +'isplay prior to item (if any):'#11'ParentColor'#8#0#0#5'TEdit'#12'jpegnameE'
+  +'dit'#4'Left'#3#240#0#6'Height'#2#23#3'Top'#3'$'#1#5'Width'#3't'#1#8'TabOrde'
+  +'r'#2#7#4'Text'#6#12'jpegnameEdit'#0#0#6'TLabel'#13'TFItemNoLabel'#4'Left'#2
+  +#7#6'Height'#2#16#3'Top'#3#179#0#5'Width'#2'K'#7'Caption'#6#12'Item Number:'
+  +#11'ParentColor'#8#0#0#5'TEdit'#10'ItemNoEdit'#4'Left'#2'`'#6'Height'#2#23#3
+  +'Top'#3#172#0#5'Width'#2','#8'TabOrder'#2#8#4'Text'#6#1'1'#0#0#6'TLabel'#13
+  +'ItemCodeLabel'#4'Left'#3#176#0#6'Height'#2#16#3'Top'#3#179#0#5'Width'#2']'#7
+  +'Caption'#6#16'Item Major Code:'#11'ParentColor'#8#0#0#5'TEdit'#13'MajorCode'
+  +'Edit'#4'Left'#3#24#1#6'Height'#2#23#3'Top'#3#172#0#5'Width'#2')'#8'TabOrder'
+  +#2#9#4'Text'#6#1'1'#0#0#6'TLabel'#14'MinorCodeLabel'#4'Left'#3'P'#1#6'Height'
+  +#2#16#3'Top'#3#177#0#5'Width'#2'^'#7'Caption'#6#16'Item Minor Code:'#11'Pare'
+  +'ntColor'#8#0#0#5'TEdit'#13'MinorCodeEdit'#4'Left'#3#184#1#6'Height'#2#23#3
+  +'Top'#3#172#0#5'Width'#2'-'#8'TabOrder'#2#10#4'Text'#6#1'0'#0#0#6'TLabel'#13
+  +'ItemStemLabel'#4'Left'#2#8#6'Height'#2#16#3'Top'#3#220#0#5'Width'#2':'#7'Ca'
+  +'ption'#6#10'Item Stem:'#11'ParentColor'#8#0#0#5'TEdit'#12'ItemStemEdit'#4'L'
+  +'eft'#2'I'#6'Height'#2#23#3'Top'#3#213#0#5'Width'#3#27#2#8'TabOrder'#2#11#4
+  +'Text'#6#12'ItemStemEdit'#0#0#6'TLabel'#11'AnswerLabel'#4'Left'#2#8#6'Height'
+  +#2#16#3'Top'#3#0#1#5'Width'#2'J'#7'Caption'#6#13'Short Answer:'#11'ParentCol'
+  +'or'#8#0#0#5'TEdit'#10'AnswerEdit'#4'Left'#2'`'#6'Height'#2#23#3'Top'#3#249#0
+  +#5'Width'#3#4#2#8'TabOrder'#2#12#0#0#5'TMemo'#5'Memo1'#4'Left'#2#20#6'Height'
+  +#3#133#0#3'Top'#2#11#5'Width'#3'P'#2#13'Lines.Strings'#1#6'fDirections:  To '
+  +'create an Essay item, you will need to enter the number of an item code whi'
+  +'ch contains'#6'jboth a major code and a minor code.  It is suggested you pr'
+  +'int all item codes from the options menu on the'#6'emain procedure page of '
+  +'the item banking program.  You can however, browse the Essay items  from th'
+  +'is '#6#5'form.'#6'kAfter you have selected an item code number, enter the i'
+  +'tem stem in the space provided.  Your item can also'#6'qinclude a jpeg pict'
+  +'ure prior to the presentation of the item on a test.  To find the image, cl'
+  +'ick the jpeg browse'#6'mbutton until you see the image you wish to include.'
+  +'  When that item is shown, click the Select button to save'#6#27'the name o'
+  +'f the image file.'#0#8'TabOrder'#2#13#0#0#7'TButton'#13'CodeBrowseBtn'#4'Le'
+  +'ft'#3#246#1#6'Height'#2#28#3'Top'#3#165#0#5'Width'#2'j'#7'Caption'#6#12'Bro'
+  +'wse Items'#7'OnClick'#7#18'CodeBrowseBtnClick'#8'TabOrder'#2#14#0#0#18'TOpe'
+  +'nPictureDialog'#18'OpenPictureDialog1'#4'left'#3#156#1#3'top'#3#215#1#0#0#0
+]);
--- a/applications/lazstats/source_orig/essayitemunit.pas
+++ b/applications/lazstats/source_orig/essayitemunit.pas
@ -0,0 +1,260 @@
+unit EssayItemUnit;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  StdCtrls, ExtCtrls, ExtDlgs, outputunit;
+
+type
+
+  { TEssayItemForm }
+
+  TEssayItemForm = class(TForm)
+    AnswerEdit: TEdit;
+    AnswerLabel: TLabel;
+    CodeBrowseBtn: TButton;
+    Image1: TImage;
+    ItemCodeLabel: TLabel;
+    ItemSaveBtn: TButton;
+    ItemStemEdit: TEdit;
+    ItemStemLabel: TLabel;
+    jpegBrowseBtn: TButton;
+    jpeglabel: TLabel;
+    jpegnameEdit: TEdit;
+    MajorCodeEdit: TEdit;
+    Memo1: TMemo;
+    MinorCodeEdit: TEdit;
+    MinorCodeLabel: TLabel;
+    OpenPictureDialog1: TOpenPictureDialog;
+    PreviousBtn: TButton;
+    ReturnBtn: TButton;
+    SelectImageBtn: TButton;
+    ShowNextBtn: TButton;
+    StartNewBtn: TButton;
+    ItemNoEdit: TEdit;
+    TFItemNoLabel: TLabel;
+    procedure CodeBrowseBtnClick(Sender: TObject);
+    procedure FormShow(Sender: TObject);
+    procedure ItemSaveBtnClick(Sender: TObject);
+    procedure jpegBrowseBtnClick(Sender: TObject);
+    procedure PreviousBtnClick(Sender: TObject);
+    procedure ReturnBtnClick(Sender: TObject);
+    procedure SelectImageBtnClick(Sender: TObject);
+    procedure ShowNextBtnClick(Sender: TObject);
+    procedure StartNewBtnClick(Sender: TObject);
+  private
+    { private declarations }
+  public
+    { public declarations }
+  end; 
+
+var
+  EssayItemForm: TEssayItemForm;
+
+implementation
+uses ItemBankingUnit;
+
+{ TEssayItemForm }
+
+procedure TEssayItemForm.ReturnBtnClick(Sender: TObject);
+begin
+  EssayItemForm.Hide;
+  Close;
+end;
+
+procedure TEssayItemForm.SelectImageBtnClick(Sender: TObject);
+begin
+  jpegnameEdit.Text := OpenPictureDialog1.FileName;
+end;
+
+procedure TEssayItemForm.ShowNextBtnClick(Sender: TObject);
+var
+  count : integer;
+  itemno : integer;
+  JPEG : TJPEGImage;
+begin
+  itemno := StrToInt(ItemNoEdit.Text) + 1;
+  count :=  ItemBankFrm.BankInfo.NEssayItems;
+  if count <= itemno then
+  begin
+       ItemNoEdit.Text := IntToStr(ItemBankFrm.EssayInfo[itemno].ItemNumber);
+       MajorCodeEdit.Text := IntToStr(ItemBankFrm.EssayInfo[itemno].majorcode) ;
+       MinorCodeEdit.Text := IntToStr(ItemBankFrm.EssayInfo[itemno].minorcode);
+       ItemStemEdit.Text := ItemBankFrm.EssayInfo[itemno].ItemStem;
+       AnswerEdit.Text := ItemBankFrm.EssayInfo[itemno].Answer;
+       jpegnameEdit.Text := ItemBankFrm.EssayInfo[itemno].PicName;
+       if jpegnameEdit.Text <> 'none' then
+       begin
+          JPEG := TJPEGImage.Create;
+          try
+             JPEG.LoadFromFile(jpegnameEdit.Text);
+             Image1.Picture.Assign(JPEG);
+          finally
+          JPEG.Free;
+          Image1.Proportional := true;
+          end;
+       end;
+  end;
+end;
+
+procedure TEssayItemForm.StartNewBtnClick(Sender: TObject);
+var
+  currentno : integer;
+begin
+  currentno := ItemBankFrm.BankInfo.NEssayItems + 1;
+  ItemNoEdit.Text := IntToStr(currentno);
+  currentno := StrToInt(MinorCodeEdit.Text);
+  MinorCodeEdit.Text := IntToStr(currentno + 1);
+  ItemStemEdit.Text := '';
+  AnswerEdit.Text := '';
+  jpegnameEdit.Text := 'none';
+  Image1.Canvas.Clear;
+end;
+
+procedure TEssayItemForm.ItemSaveBtnClick(Sender: TObject);
+var
+  currentno : integer;
+  count : integer;
+begin
+  count := ItemBankFrm.BankInfo.NEssayItems;
+  currentno := StrToInt(ItemNoEdit.Text);
+  if currentno > count then
+  begin
+    ItemBankFrm.BankInfo.NEssayItems := currentno;
+    ItemBankFrm.NEssayText.Text := IntToStr(currentno);
+  end;
+  ItemBankFrm.EssayInfo[currentno].ItemNumber := currentno;
+  ItemBankFrm.EssayInfo[currentno].majorcode := StrToInt(MajorCodeEdit.Text);
+  ItemBankFrm.EssayInfo[currentno].minorcode := StrToInt(MinorCodeEdit.Text);
+  ItemBankFrm.EssayInfo[currentno].ItemStem := ItemStemEdit.Text;
+  ItemBankFrm.EssayInfo[currentno].Answer := AnswerEdit.text;
+  ItemBankFrm.EssayInfo[currentno].PicName := jpegnameEdit.Text;
+end;
+
+procedure TEssayItemForm.FormShow(Sender: TObject);
+Var
+  nitems : integer;
+  JPEG : TJPEGImage;
+begin
+  if ItemBankFrm.BankInfo.NEssayItems  > 0 then
+  begin
+       nitems := ItemBankFrm.BankInfo.NEssayItems;
+       ItemNoEdit.Text := '1'; //IntToStr(ItemBankFrm.TFItemInfo[1].ItemNumber);
+       MajorCodeEdit.Text := IntToStr(ItemBankFrm.EssayInfo[1].majorcode) ;
+       MinorCodeEdit.Text := IntToStr(ItemBankFrm.EssayInfo[1].minorcode);
+       ItemStemEdit.Text := ItemBankFrm.EssayInfo[1].ItemStem;
+       AnswerEdit.Text := ItemBankFrm.EssayInfo[1].Answer;
+       jpegnameEdit.Text := ItemBankFrm.EssayInfo[1].PicName;
+       if jpegnameEdit.Text <> 'none' then
+       begin
+          JPEG := TJPEGImage.Create;
+          try
+             JPEG.LoadFromFile(jpegnameEdit.Text);
+             Image1.Picture.Assign(JPEG);
+          finally
+          JPEG.Free;
+          Image1.Proportional := true;
+          end;
+       end;
+  end else
+  begin
+       ItemNoEdit.Text := '1';
+       MajorCodeEdit.Text := '1';
+       MinorCodeEdit.Text := '0';
+       ItemStemEdit.Text := '';
+       AnswerEdit.Text := '';
+       jpegnameEdit.Text := 'none';
+       Image1.Canvas.Clear;
+  end;
+end;
+
+procedure TEssayItemForm.CodeBrowseBtnClick(Sender: TObject);
+var
+  count : integer;
+  i : integer;
+  outline : string;
+begin
+  OutPutFrm.RichEdit.Clear;
+  count := ItemBankFrm.BankInfo.NTFItems;
+  OutPutFrm.RichEdit.Lines.Add('Current Items');
+  OutPutFrm.RichEdit.Lines.Add('');
+
+  for i := 1 to count do
+  begin
+       outline := format('Item number %3d',[ItemBankFrm.EssayInfo[i].itemnumber]);
+       OutPutFrm.RichEdit.Lines.Add(outline);
+       outline := format('Major Code %3d',[ItemBankFrm.EssayInfo[i].majorcode]);
+       OutPutFrm.RichEdit.Lines.Add(outline);
+       outline := format('Minor Code %3d',[ItemBankFrm.EssayInfo[i].minorcode]);
+       OutPutFrm.RichEdit.Lines.Add(outline);
+       outline := format('Item Stem %s',[ItemBankFrm.EssayInfo[i].ItemStem]);
+       OutPutFrm.RichEdit.Lines.Add(outline);
+       outline := format('Breif Answer %s',[ItemBankFrm.EssayInfo[i].Answer]);
+       OutPutFrm.RichEdit.Lines.Add(outline);
+       outline := format('Graphic Image %s',[ItemBankFrm.EssayInfo[i].PicName]);
+       OutPutFrm.RichEdit.Lines.Add(outline);
+       OutPutFrm.RichEdit.Lines.Add('');
+  end;
+  OutPutFrm.ShowModal;
+end;
+
+procedure TEssayItemForm.jpegBrowseBtnClick(Sender: TObject);
+VAR
+  JPEG : TJPEGImage;
+begin
+  OpenPictureDialog1.Options := OpenPictureDialog1.Options+[ofFileMustExist];
+  if not OpenPictureDialog1.Execute then exit;
+  try
+    JPEG := TJPEGImage.Create;
+    try
+      JPEG.LoadFromFile(OpenPictureDialog1.FileName);
+      Image1.Picture.Assign(JPEG);
+    finally
+      JPEG.Free;
+    end;
+  except
+    on E: Exception do begin
+      MessageDlg('Error','Error: '+E.Message,mtError,[mbOk],0);
+    end;
+  end;
+  Image1.Proportional := true;
+end;
+
+procedure TEssayItemForm.PreviousBtnClick(Sender: TObject);
+Var
+  response : string;
+  itemno : integer;
+  JPEG : TJPEGImage;
+begin
+  response := InputBox('Code Number:','Number:','1');
+  itemno := StrToInt(response);
+  if itemno <= ItemBankFrm.BankInfo.NEssayItems then
+  begin
+       ItemNoEdit.Text := IntToStr(ItemBankFrm.EssayInfo[itemno].ItemNumber);
+       MajorCodeEdit.Text := IntToStr(ItemBankFrm.EssayInfo[itemno].majorcode);
+       MinorCodeEdit.Text := IntToStr(ItemBankFrm.EssayInfo[itemno].minorcode);
+       ItemStemEdit.Text := ItemBankFrm.EssayInfo[itemno].ItemStem ;
+       AnswerEdit.Text := ItemBankFrm.EssayInfo[itemno].Answer;
+       jpegnameEdit.Text := ItemBankFrm.EssayInfo[itemno].PicName;
+       if jpegnameEdit.Text <> 'none' then
+       begin
+          JPEG := TJPEGImage.Create;
+          try
+             JPEG.LoadFromFile(jpegnameEdit.Text);
+             Image1.Picture.Assign(JPEG);
+          finally
+          JPEG.Free;
+          Image1.Proportional := true;
+          end;
+       end;
+  end;
+end;
+
+initialization
+  {$I essayitemunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/fprobunit.lfm
+++ b/applications/lazstats/source_orig/fprobunit.lfm
@ -0,0 +1,112 @@
+object FForm: TFForm
+  Left = 288
+  Height = 232
+  Top = 161
+  Width = 322
+  Caption = 'Probability of a larger F value'
+  ClientHeight = 232
+  ClientWidth = 322
+  OnShow = ResetBtnClick
+  LCLVersion = '0.9.30'
+  object Label1: TLabel
+    Left = 8
+    Height = 16
+    Top = 16
+    Width = 118
+    Caption = 'Given: An F statistic = '
+    ParentColor = False
+  end
+  object FEdit: TEdit
+    Left = 128
+    Height = 23
+    Top = 8
+    Width = 70
+    TabOrder = 0
+    Text = 'FEdit'
+  end
+  object Label2: TLabel
+    Left = 8
+    Height = 16
+    Top = 50
+    Width = 118
+    Caption = 'with Deg. Freedom of '
+    ParentColor = False
+  end
+  object DF1Edit: TEdit
+    Left = 129
+    Height = 23
+    Top = 41
+    Width = 68
+    TabOrder = 1
+    Text = 'DF1Edit'
+  end
+  object Label3: TLabel
+    Left = 208
+    Height = 16
+    Top = 48
+    Width = 24
+    Caption = 'and '
+    ParentColor = False
+  end
+  object DF2Edit: TEdit
+    Left = 240
+    Height = 23
+    Top = 39
+    Width = 64
+    TabOrder = 2
+    Text = 'DF2Edit'
+  end
+  object Label4: TLabel
+    Left = 7
+    Height = 16
+    Top = 82
+    Width = 206
+    Caption = 'then the probability of a larger value = '
+    ParentColor = False
+  end
+  object ProbEdit: TEdit
+    Left = 239
+    Height = 23
+    Top = 75
+    Width = 64
+    TabOrder = 3
+    Text = 'ProbEdit'
+  end
+  object CancelBtn: TButton
+    Left = 7
+    Height = 33
+    Top = 120
+    Width = 82
+    Cancel = True
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 4
+  end
+  object ResetBtn: TButton
+    Left = 112
+    Height = 33
+    Top = 120
+    Width = 82
+    Caption = 'Reset'
+    OnClick = ResetBtnClick
+    TabOrder = 5
+  end
+  object ComputeBtn: TButton
+    Left = 221
+    Height = 33
+    Top = 120
+    Width = 82
+    Caption = 'Compute'
+    OnClick = ComputeBtnClick
+    TabOrder = 6
+  end
+  object ReturnBtn: TButton
+    Left = 112
+    Height = 33
+    Top = 176
+    Width = 77
+    Caption = 'Return'
+    ModalResult = 1
+    TabOrder = 7
+  end
+end
--- a/applications/lazstats/source_orig/fprobunit.lrs
+++ b/applications/lazstats/source_orig/fprobunit.lrs
@ -0,0 +1,29 @@
+{ This is an automatically generated lazarus resource file }
+
+LazarusResources.Add('TFForm','FORMDATA',[
+  'TPF0'#6'TFForm'#5'FForm'#4'Left'#3' '#1#6'Height'#3#232#0#3'Top'#3#161#0#5'W'
+  +'idth'#3'B'#1#7'Caption'#6#31'Probability of a larger F value'#12'ClientHeig'
+  +'ht'#3#232#0#11'ClientWidth'#3'B'#1#6'OnShow'#7#13'ResetBtnClick'#10'LCLVers'
+  +'ion'#6#6'0.9.30'#0#6'TLabel'#6'Label1'#4'Left'#2#8#6'Height'#2#16#3'Top'#2
+  +#16#5'Width'#2'v'#7'Caption'#6#24'Given: An F statistic = '#11'ParentColor'#8
+  +#0#0#5'TEdit'#5'FEdit'#4'Left'#3#128#0#6'Height'#2#23#3'Top'#2#8#5'Width'#2
+  +'F'#8'TabOrder'#2#0#4'Text'#6#5'FEdit'#0#0#6'TLabel'#6'Label2'#4'Left'#2#8#6
+  +'Height'#2#16#3'Top'#2'2'#5'Width'#2'v'#7'Caption'#6#21'with Deg. Freedom of'
+  +' '#11'ParentColor'#8#0#0#5'TEdit'#7'DF1Edit'#4'Left'#3#129#0#6'Height'#2#23
+  +#3'Top'#2')'#5'Width'#2'D'#8'TabOrder'#2#1#4'Text'#6#7'DF1Edit'#0#0#6'TLabel'
+  +#6'Label3'#4'Left'#3#208#0#6'Height'#2#16#3'Top'#2'0'#5'Width'#2#24#7'Captio'
+  +'n'#6#4'and '#11'ParentColor'#8#0#0#5'TEdit'#7'DF2Edit'#4'Left'#3#240#0#6'He'
+  +'ight'#2#23#3'Top'#2''''#5'Width'#2'@'#8'TabOrder'#2#2#4'Text'#6#7'DF2Edit'#0
+  +#0#6'TLabel'#6'Label4'#4'Left'#2#7#6'Height'#2#16#3'Top'#2'R'#5'Width'#3#206
+  +#0#7'Caption'#6')then the probability of a larger value = '#11'ParentColor'#8
+  +#0#0#5'TEdit'#8'ProbEdit'#4'Left'#3#239#0#6'Height'#2#23#3'Top'#2'K'#5'Width'
+  +#2'@'#8'TabOrder'#2#3#4'Text'#6#8'ProbEdit'#0#0#7'TButton'#9'CancelBtn'#4'Le'
+  +'ft'#2#7#6'Height'#2'!'#3'Top'#2'x'#5'Width'#2'R'#6'Cancel'#9#7'Caption'#6#6
+  +'Cancel'#11'ModalResult'#2#2#8'TabOrder'#2#4#0#0#7'TButton'#8'ResetBtn'#4'Le'
+  +'ft'#2'p'#6'Height'#2'!'#3'Top'#2'x'#5'Width'#2'R'#7'Caption'#6#5'Reset'#7'O'
+  +'nClick'#7#13'ResetBtnClick'#8'TabOrder'#2#5#0#0#7'TButton'#10'ComputeBtn'#4
+  +'Left'#3#221#0#6'Height'#2'!'#3'Top'#2'x'#5'Width'#2'R'#7'Caption'#6#7'Compu'
+  +'te'#7'OnClick'#7#15'ComputeBtnClick'#8'TabOrder'#2#6#0#0#7'TButton'#9'Retur'
+  +'nBtn'#4'Left'#2'p'#6'Height'#2'!'#3'Top'#3#176#0#5'Width'#2'M'#7'Caption'#6
+  +#6'Return'#11'ModalResult'#2#1#8'TabOrder'#2#7#0#0#0
+]);
--- a/applications/lazstats/source_orig/fprobunit.pas
+++ b/applications/lazstats/source_orig/fprobunit.pas
@ -0,0 +1,68 @@
+unit FProbUnit;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, FileUtil, LResources, Forms, Controls, Graphics, Dialogs,
+  StdCtrls, functionslib;
+
+type
+
+  { TFForm }
+
+  TFForm = class(TForm)
+    CancelBtn: TButton;
+    ComputeBtn: TButton;
+    DF1Edit: TEdit;
+    DF2Edit: TEdit;
+    ProbEdit: TEdit;
+    FEdit: TEdit;
+    Label1: TLabel;
+    Label2: TLabel;
+    Label3: TLabel;
+    Label4: TLabel;
+    ResetBtn: TButton;
+    ReturnBtn: TButton;
+    procedure ComputeBtnClick(Sender: TObject);
+    procedure ResetBtnClick(Sender: TObject);
+  private
+    { private declarations }
+  public
+    { public declarations }
+  end; 
+
+var
+  FForm: TFForm;
+
+implementation
+
+{ TFForm }
+
+procedure TFForm.ResetBtnClick(Sender: TObject);
+begin
+  FEdit.Text := '';
+  DF1Edit.Text := '';
+  DF2Edit.Text := '';
+  ProbEdit.Text := '';
+end;
+
+procedure TFForm.ComputeBtnClick(Sender: TObject);
+VAR
+  F, df1, df2, prob : extended;
+  outvalue : string;
+begin
+   F := StrToFloat(FEdit.Text);
+   df1 := StrToFloat(DF1Edit.Text);
+   df2 := StrToFloat(DF2Edit.Text);
+   prob := probf(F,df1,df2);
+   outvalue := format('%6.4f',[prob]);
+   ProbEdit.Text := outvalue;
+end;
+
+initialization
+  {$I fprobunit.lrs}
+
+end.
+
--- a/applications/lazstats/source_orig/freqspecsunit.lfm
+++ b/applications/lazstats/source_orig/freqspecsunit.lfm
@ -0,0 +1,143 @@
+object FreqSpecsFrm: TFreqSpecsFrm
+  Left = 281
+  Height = 358
+  Top = 107
+  Width = 300
+  Caption = 'Frequency Specifications'
+  ClientHeight = 358
+  ClientWidth = 300
+  LCLVersion = '0.9.30'
+  object Label1: TLabel
+    Left = 11
+    Height = 16
+    Top = 119
+    Width = 56
+    Caption = 'VARIABLE:'
+    ParentColor = False
+  end
+  object Label2: TLabel
+    Left = 11
+    Height = 16
+    Top = 151
+    Width = 46
+    Caption = 'MINIUM'
+    ParentColor = False
+  end
+  object Label3: TLabel
+    Left = 11
+    Height = 16
+    Top = 183
+    Width = 60
+    Caption = 'MAXIMUM'
+    ParentColor = False
+  end
+  object Label4: TLabel
+    Left = 11
+    Height = 16
+    Top = 215
+    Width = 39
+    Caption = 'RANGE'
+    ParentColor = False
+  end
+  object Label5: TLabel
+    Left = 11
+    Height = 16
+    Top = 247
+    Width = 79
+    Caption = 'INTERVAL SIZE'
+    ParentColor = False
+  end
+  object Label6: TLabel
+    Left = 11
+    Height = 16
+    Top = 279
+    Width = 84
+    Caption = 'NO. INTERVALS'
+    ParentColor = False
+  end
+  object VarName: TEdit
+    Left = 112
+    Height = 23
+    Top = 112
+    Width = 169
+    TabOrder = 0
+  end
+  object Minimum: TEdit
+    Left = 112
+    Height = 23
+    Top = 144
+    Width = 169
+    TabOrder = 1
+  end
+  object Maximum: TEdit
+    Left = 112
+    Height = 23
+    Top = 176
+    Width = 169
+    TabOrder = 2
+  end
+  object Range: TEdit
+    Left = 112
+    Height = 23
+    Top = 208
+    Width = 169
+    TabOrder = 3
+  end
+  object IntSize: TEdit
+    Left = 112
+    Height = 23
+    Top = 240
+    Width = 169
+    OnKeyPress = IntSizeKeyPress
+    TabOrder = 4
+  end
+  object NoInts: TEdit
+    Left = 112
+    Height = 23
+    Top = 272
+    Width = 169
+    TabOrder = 5
+  end
+  object CancelBtn: TButton
+    Left = 104
+    Height = 32
+    Top = 311
+    Width = 81
+    Caption = 'Cancel'
+    ModalResult = 2
+    TabOrder = 6
+  end
+  object OKBtn: TButton
+    Left = 200
+    Height = 31
+    Top = 311
+    Width = 81
+    Caption = 'OK'
+    ModalResult = 1
+    TabOrder = 7
+  end
+  object HelpBtn: TButton
+    Tag = 123
+    Left = 11
+    Height = 32
+    Top = 311
+    Width = 82
+    Caption = 'Help'
+    OnClick = HelpBtnClick
+    TabOrder = 8
+  end
+  object Memo1: TMemo
+    Left = 7
+    Height = 87
+    Top = 1
+    Width = 277
+    Lines.Strings = (
+      'The number of intervals must be less than or '
+      'equal to the number of cases.  To change the'
+      'number of intervals, change the interval size'
+      'to a larger value.  Press the Enter key to make'
+      'the number of intervals smaller.'
+    )
+    TabOrder = 9
+  end
+end