IStatistics.DevSq

Syntax

DevSq(Values: Array): Double;

Parameters

Values, The set of values whose squared deviations are summed up.

Description

The DevSq method returns the sum of data points' squared deviations from their mean.

Example

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

Sub UserProc;
Var
    st: Statistics;
    d0: Double;
    y: Array Of Double;
Begin
    y := New Double[10];
    y[00] := 1.6;
    y[01] := 1.7;
    y[02] := 1.8;
    y[03] := 1.9;
    y[04] := 2;
    y[05] := 2.1;
    y[06] := 2.2;
    y[07] := 2.3;
    y[08] := 2.4;
    y[09] := 2.8;
    st := New Statistics.Create;
    d0 := st.DevSq(y);
    Debug.WriteLine("Sum of deviation squares: " + d0.ToString);
End Sub UserProc;

Executing the example shows the sum of squared deviations in the console window:

Unit execution started

Sum of deviation squares: 1.176

Unit execution finished