Example usage for org.apache.commons.math.stat.descriptive.moment Variance incrementAll

Introduction

In this page you can find the example usage for org.apache.commons.math.stat.descriptive.moment Variance incrementAll.

Prototype

public void incrementAll(double[] values) 

Source Link

Document

This default implementation just calls #increment in a loop over the input array.

Usage

From source file:org.beedraz.semantics_II.MathBugDemonstration.java

/**
 * @param args/*  ww  w  .  j  av a  2s  .com*/
 */
public static void main(String[] args) {

    // difference between getResult and evaluate
    //      double[] values = new double[] {1.0, 2.0, Double.POSITIVE_INFINITY};
    //      Variance var1 = new Variance();
    //      double value1 = var1.evaluate(values);
    //      Variance var2 = new Variance();
    //      var2.incrementAll(values);
    //      double value2 = var2.getResult();
    //      System.out.println(value1);
    //      System.out.println(value2);

    // difference between getResult and evaluate
    double[] values = new double[] { 1.0, 2.0, Double.NEGATIVE_INFINITY };
    Variance var1 = new Variance();
    double value1 = var1.evaluate(values);
    Variance var2 = new Variance();
    var2.incrementAll(values);
    double value2 = var2.getResult();
    var2.evaluate(values);
    System.out.println(value1);
    System.out.println(value2);

    //    // evaluate method changes internal representation
    //    double[] values = new double[] {1.0, 2.0, Double.NEGATIVE_INFINITY};
    //    Variance var1 = new Variance();
    //    var1.incrementAll(values);
    //    System.out.println(var1.getN());
    //    System.out.println(var1.getResult());
    //    double value1 = var1.evaluate(values);
    //    System.out.println(var1.getN());
    //    System.out.println(var1.getResult());
    //    System.out.println(value1);

}

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