IStatistics.HarMean

Syntax

HarMean(Values: Array): Double;

Parameters

Values. A set of arguments mean of which you want to calculate.

Description

The HarMean method returns the harmonic mean of a data set.

Comments

The harmonic mean is a value inverse to the arithmetic mean of inverse values. The harmonic mean is always less than the geometric mean, which is always less than the arithmetic 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.HarMean(y);
    Debug.WriteLine("Harmonic mean: " + d0.ToString);
End Sub UserProc;

After executing the example the mean value is output to the console window:

Unit execution started

Harmonic mean: 2.02657459326811

Unit execution finished