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https://issues.apache.org/jira/browse/MATH-431?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikkel Meyer Andersen updated MATH-431:
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Attachment: WilcoxonSignedRankTestImpl.java
WilcoxonSignedRankTest.java
Proposal for the Wilcoxon signed rank test:
double x[] = {125, 115, 130, 140, 140, 115, 140, 125, 140, 135};
double y[] = {110, 122, 125, 120, 140, 124, 123, 137, 135, 145};
And with R:
x <- c(125, 115, 130, 140, 140, 115, 140, 125, 140, 135)
y <- c(110, 122, 125, 120, 140, 124, 123, 137, 135, 145)
wilcox.test(x, y, alternative = "two.sided", mu = 0, paired = TRUE, exact =
FALSE, correct = FALSE)
The p-values differs slightly.
> New tests: Wilcoxon signed-rank test and Mann-Whitney U
> -------------------------------------------------------
>
> Key: MATH-431
> URL: https://issues.apache.org/jira/browse/MATH-431
> Project: Commons Math
> Issue Type: New Feature
> Reporter: Mikkel Meyer Andersen
> Assignee: Mikkel Meyer Andersen
> Priority: Minor
> Attachments: MannWhitneyUTest.java, MannWhitneyUTestImpl.java,
> WilcoxonSignedRankTest.java, WilcoxonSignedRankTestImpl.java
>
> Original Estimate: 4h
> Remaining Estimate: 4h
>
> Wilcoxon signed-rank test and Mann-Whitney U are commonly used non-parametric
> statistical hypothesis tests (e.g. instead of various t-tests when normality
> is not present).
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