IModelCoefficients.Coefficients

Syntax

Description

The Coefficients property determines coefficients' parameters.

Comments

To determine parameters of the model constant, use the IModelCoefficients.Intercept 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(LR.Errors);
    Debug.WriteLine("-----Model coefficients:");
    For i := 0 To Coefficients.Estimate.Length - 1 Do
        Debug.WriteLine(Coefficients.Estimate[i]);
    End For;
    Debug.WriteLine("-----Probability of coefficients:");
    For i := 0 To Coefficients.Probability.Length - 1 Do
        Debug.WriteLine(Coefficients.Probability[i]);
    End For;
    Debug.WriteLine("-----Standard coefficient errors:");
    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;
    Debug.WriteLine("-----Model constant:");
    Debug.WriteLine(Intercept.Estimate);
End Sub UserProc;

As a result of the example execution, the following settings are defined:

Method of missing data treatment.
Parameters of coefficients.
Parameters of model coefficients.

The console window displays values of coefficients and constants.