ICoefficients.Estimate

Syntax

Estimate: Array;

Description

The Estimate property returns an array of estimated values of model coefficients.

Comments

To get the array of coefficients probability values, use the ICoefficients.Probability property.

Example

To execute the example, add a link to the Stat system assembly.

Sub UserProc;
Var
    LR: ISmLinearRegress;
    Intercept: IIntercept;
    ModelCoefficients: IModelCoefficients;
    Coefficients: ICoefficients;
    can, fra: Array[10] Of Double;
    res, i: Integer;
Begin
    LR := New SmLinearRegress.Create;
    // Set values for variables
    Can[0] := 6209; fra[0] := 4110;
    Can[1] := 6385; fra[1] := 4280;
    Can[2] := 6495; fra[2] := 4459;
    Can[3] := 6837; fra[3] := 4545;
    Can[4] := 6495; fra[4] := 4664;
    Can[5] := 6907; fra[5] := 4861;
    Can[6] := 7349; fra[6] := 5195;
    Can[7] := 7213; fra[7] := 5389;
    Can[8] := 7061; fra[8] := 5463;
    Can[9] := 7180; fra[9] := 5610;
    // Set explained variable
    LR.Explained.Value := can;
    // Set explanatory variables
    LR.Explanatories.Clear;
    LR.Explanatories.Add.Value := fra;
    // Missing data treatment
    LR.MissingData.Method := MissingDataMethod.LinInterpolation;
    // Parameters of coefficients
    ModelCoefficients := LR.ModelCoefficients;
    Coefficients := ModelCoefficients.Coefficients;
    // Parameters of model constant
    Intercept := ModelCoefficients.Intercept;
    Intercept.Mode := InterceptMode.AutoEstimate;
    res := LR.Execute;
    Debug.WriteLine("=== Model coefficients ===");
    For i := 0 To Coefficients.Estimate.Length - 1 Do
        Debug.WriteLine(Coefficients.Estimate[i]);
    End For;
    Debug.WriteLine("=== Coefficient probabilities ===");
    For i := 0 To Coefficients.Probability.Length - 1 Do
        Debug.WriteLine(Coefficients.Probability[i]);
    End For;
    Debug.WriteLine("=== Standard errors of coefficients ===");
    For i := 0 To Coefficients.StandardError.Length - 1 Do
        Debug.WriteLine(Coefficients.StandardError[i]);
    End For;
    Debug.WriteLine("=== t-statistics of coefficients ===");
    For i := 0 To Coefficients.TStatistic.Length - 1 Do
        Debug.WriteLine(Coefficients.TStatistic[i]);
    End For;
End Sub UserProc;

After executing the example the console window displays coefficient values:

=== Model coefficients===

0,675652218575972

=== Coefficient probabilities ===

3,21885272861033E-04

=== Standard errors of coefficients ===

0,112530025662791

=== t-statistics of coefficients ===

6,00419501014458