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https://issues.apache.org/jira/browse/MATH-431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928969#action_12928969
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Mikkel Meyer Andersen commented on MATH-431:
--------------------------------------------
Proposal for the Mann-Whitney U.
Test can e.g. be made with this:
double x2[] = {19, 22, 16, 29, 24};
double y2[] = {20, 11, 17, 12};
x <- c(19, 22, 16, 29, 24)
y <- c(20, 11, 17, 12)
wilcox.test(x, y, alternative = "two.sided", mu = 0, paired = FALSE, exact =
FALSE, correct = FALSE)
The p-value is not exactly equal.
> 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
>
> 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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