Package dev.nm.stat.test.rank
Class VanDerWaerden
- java.lang.Object
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- dev.nm.stat.test.HypothesisTest
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- dev.nm.stat.test.rank.VanDerWaerden
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public class VanDerWaerden extends HypothesisTest
The Van der Waerden test tests for the equality of all population distribution functions. It converts the ranks from a standard Kruskal-Wallis one-way analysis of variance to quantiles of the standard normal distribution. These are called normal scores and the test is computed from these normal scores.- See Also:
- Wikipedia: Van der Waerden test
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Constructor Summary
Constructors Constructor Description VanDerWaerden(double[]... samples)
Perform the Van Der Waerden test to test for the equality of all population distribution functions.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description String
getAlternativeHypothesis()
Get the description of the alternative hypothesis.String
getNullHypothesis()
Get a description of the null hypothesis.double
pValue()
Get the p-value for the test statistics.double
statistics()
Get the test statistics.-
Methods inherited from class dev.nm.stat.test.HypothesisTest
isNullRejected, nGroups, nObs, oneSidedPvalue
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Method Detail
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getNullHypothesis
public String getNullHypothesis()
Description copied from class:HypothesisTest
Get a description of the null hypothesis.- Specified by:
getNullHypothesis
in classHypothesisTest
- Returns:
- the null hypothesis description
- See Also:
- Wikipedia: Null hypothesis
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getAlternativeHypothesis
public String getAlternativeHypothesis()
Description copied from class:HypothesisTest
Get the description of the alternative hypothesis.- Specified by:
getAlternativeHypothesis
in classHypothesisTest
- Returns:
- the alternative hypothesis description
- See Also:
- Wikipedia: Alternative hypothesis
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statistics
public double statistics()
Description copied from class:HypothesisTest
Get the test statistics.- Specified by:
statistics
in classHypothesisTest
- Returns:
- the test statistics
- See Also:
- Wikipedia: Test statistic
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pValue
public double pValue()
Description copied from class:HypothesisTest
Get the p-value for the test statistics.- Specified by:
pValue
in classHypothesisTest
- Returns:
- the p-value
- See Also:
- Wikipedia: P-value
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