ISmExponentialSmoothing.SummaryStatistics

Syntax

SummaryStatistics: ISummaryStatistics

Description

The SummaryStatistics property returns summary statistics.

Example

Sub Main;

Var

Method: SmExponentialSmoothing;

serie: Array Of Double;

status: Integer;

Seasonal: ISeasonal;

Stat: Double;

Begin

Method := New SmExponentialSmoothing.Create;

serie := New Double[15];

serie[0] := 670.2000183;

serie[1] := 576.0680563;

serie[2] := 717.6484268;

serie[3] := 856.9105808;

serie[4] := 885.4609516;

serie[5] := 1011.846431;

serie[6] := 995.4496292;

serie[7] := 1064.74221;

serie[8] := 1033.324656;

serie[9] := 780.8584552;

serie[10] := 657.5033113;

serie[11] := 654.5472579;

serie[12] := 678.2380139;

serie[13] := 642.4128544;

serie[14] := 751.9611194;

Method.Serie.Value := serie;

Method.Forecast.LastPoint := 40;

Seasonal := Method.SeasonalComponent;

Seasonal.Mode := SeasonalityType.Additive;

Seasonal.Cycle := 4;

status := Method.Execute;

If status <> 0 Then

Debug.WriteLine(Method.Errors);

Else

Debug.WriteLine("=== Durbin-Watson statistic ===");

Stat := Method.SummaryStatistics.DW;

Debug.WriteLine(Stat.ToString);

Debug.WriteLine("=== Mean error === ");

Stat := Method.SummaryStatistics.ME;

Debug.WriteLine(Stat.ToString);

End If;

End Sub Main;

After executing the example the console window displays the following results:

Module execution started

=== Durbin-Watson statistic ===

0.39820049071754854

=== Mean error ===

-21.618813881132027

Module execution finished