com.numericalmethod.suanshu.stats.test.distribution.kolmogorov
Class KolmogorovSmirnov2Samples

java.lang.Object
  com.numericalmethod.suanshu.stats.test.HypothesisTest
      com.numericalmethod.suanshu.stats.test.distribution.kolmogorov.KolmogorovSmirnov
          com.numericalmethod.suanshu.stats.test.distribution.kolmogorov.KolmogorovSmirnov2Samples

public class KolmogorovSmirnov2Samples
extends KolmogorovSmirnov

The two-sample Kolmogorov-Smirnov test (two-sample KS test) tests for the equality of the distributions of two samples.

See Also:

"Jean Dickinson Gibbons, Subhabrata Chakraborti, "Section 6.3," Nonparametric Statistical Inference, 4th edition."

Nested Class Summary

Nested classes/interfaces inherited from class com.numericalmethod.suanshu.stats.test.distribution.kolmogorov.KolmogorovSmirnov

KolmogorovSmirnov.Side, KolmogorovSmirnov.Type

Constructor Summary

KolmogorovSmirnov2Samples(double[] sample1, double[] sample2, KolmogorovSmirnov.Side side)
Construct a two-sample Kolmogorov-Smirnov test.

Method Summary

double	pValue() Get the p-value for the test statistics.
double	statistics() Get the test statistics.

Methods inherited from class com.numericalmethod.suanshu.stats.test.distribution.kolmogorov.KolmogorovSmirnov

getAlternativeHypothesis, getNullHypothesis

Methods inherited from class com.numericalmethod.suanshu.stats.test.HypothesisTest

isNullRejected, nGroups, nObs, oneSidedPvalue

Methods inherited from class java.lang.Object

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

Constructor Detail

KolmogorovSmirnov2Samples

public KolmogorovSmirnov2Samples(double[] sample1,
                                 double[] sample2,
                                 KolmogorovSmirnov.Side side)

Construct a two-sample Kolmogorov-Smirnov test.

Parameters:

sample1 - a sample

sample2 - another sample

side - one-sided or two-sided test

Method Detail

statistics

public double statistics()

Description copied from class: HypothesisTest

Get the test statistics.

Specified by:

statistics in class HypothesisTest

Returns:

the test statistics

See Also:

Wikipedia: Test statistic

pValue

public double pValue()

Description copied from class: HypothesisTest

Get the p-value for the test statistics.

Specified by:

pValue in class HypothesisTest

Returns:

the p-value

See Also:

Wikipedia: P-value