org.apache.jena.sparql.expr.aggregate.lib

Class AccStatLib

java.lang.Object

org.apache.jena.sparql.expr.aggregate.lib.AccStatLib

public class AccStatLib
extends Object

Constructor Summary

Constructors

Constructor and Description
AccStatLib()

Method Summary

Modifier and Type	Method and Description
static double	calcVariancePopulation(double sumSquared, double sum, long N) Calculate the variance (population)
static double	calcVarianceSample(double sumSquared, double sum, long count) Calculate the variance (sample)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AccStatLib

public AccStatLib()

Method Detail

calcVarianceSample

public static double calcVarianceSample(double sumSquared,
                                        double sum,
                                        long count)

Calculate the variance (sample)

calcVariancePopulation

public static double calcVariancePopulation(double sumSquared,
                                            double sum,
                                            long N)

Calculate the variance (population)