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

Sub Main;

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 Main;

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

Module execution started

Harmonic mean: 2.0265745932681107

Module execution finished