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From: HAMER@VCUVAX.BITNET (ROBERT M. HAMER)
Newsgroups: bit.listserv.sas-l
Subject: RE: U-Mann-Whitney test
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Date: 7 Feb 90 13:55:00 GMT
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paul joachim elz <OMP011@DE0HRZ1A.BITNET> schribt:

>i have the problem to do a u-test ( developed by Mann and Whitney) on
>unbalanced groups. does anybody have already solved that problem and
>a working sas program for it ? Or where could I look in ?

A Mann-Whitney U test is a transformation of a Wilcoxon Rank-Sum test.
The two tests test equivelent hypotheses and produce the same p-value
with the same data.  PROC NPAR1WAY does the Wilcoxon Rank-Sum test.