Re: [R] Wilcoxon Mann-Whitney Rank Sum Test in R

From: Bob Green <bgreen_at_dyson.brisnet.org.au>
Date: Wed 21 Dec 2005 - 07:24:16 EST

An earlier post had posed the question: "Does anybody know what is relation between 'T' value calculated by 'wilcox_test' function (coin package) and more common 'W' value?"

I found the question interesting and ran the commands in R and SPSS. The W reported by R did not seem to correspond to either Mann-Whitney U, Wilcoxon W or the Z which I have more commonly used. Correction for ties may have affected my results.

Can anyone else explain what the reported W is and the relation to the reported T?

regards

bob



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