Wilcoxon rank sum in unbalanced design
On Apr 13, 2011, at 17:07 , netrunner wrote:
Hi everyone! I need to perform a Wilcoxon rank sum test, but I have some ties and the groups have different size also. When I deal with ties I use the wilcox.exact function, how can I solve the different size problem using this function?
What problem? Wilcoxon tests work quite happily with unequal group sizes. There's some loss of power due to imbalance, but the only way around _that_ is to move observations from one group to the other... (And exact testing actually solves a slightly different problem than the tie issue, but never mind.)
thanks net -- View this message in context: http://r.789695.n4.nabble.com/Wilcoxon-rank-sum-in-unbalanced-design-tp3447400p3447400.html Sent from the R help mailing list archive at Nabble.com.
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