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

P Ehlers ehlers at math.ucalgary.ca
Wed Dec 21 13:51:55 CET 2005


You're right, of course, as usual. Sorry about that.

Peter E.

Peter Dalgaard wrote:
> P Ehlers <ehlers at math.ucalgary.ca> writes:
>>>so a good guess at its definition is that it is obtained from W or one
>>>of the others by subtracting the mean and dividing with the SD.
>>With the SD adjusted for ties, of course. (See, e.g., Conover's book.)
> ...which is actually the exact SD, conditional on the set of tied
> ranks, not just a correction term. See my discussion with Torsten a
> month or so ago.

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