Java Variance variance(double[] array)

Description

variance

License

Open Source License

Declaration

public static double variance(double[] array) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    public static double variance(double[] array) {
        double variance = 0;

        double mean = 0;

        for (int i = 0; i < array.length; i++) {
            mean += array[i];/*from   www .jav a  2s  .  com*/
        }

        mean /= array.length;

        for (int i = 0; i < array.length; i++) {
            variance += Math.pow((array[i] - mean), 2);
        }

        variance /= array.length;

        return variance;
    }
}

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