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st: Wilcoxon-ranksum-test


From   "Andreas Aschbacher" <aa_surf@gmx.at>
To   statalist@hsphsun2.harvard.edu
Subject   st: Wilcoxon-ranksum-test
Date   Fri, 20 Feb 2004 10:16:07 +0100 (MET)

Dear fellows !

I made two sample Wilcoxon-ranksum-test
/ to show that two independent samples are from same distribution = H0/
with following results: m ... men     W ... woman
-
    gender |      obs    rank sum    expected
-------------+---------------------------------
          m |   3.7e+05  1.397e+11   1.398e+11
          W |   3.7e+05  1.382e+11   1.382e+11
-------------+---------------------------------
    combined |   7.5e+05  2.780e+11   2.780e+11

unadjusted variance   8.636e+15
adjustment for ties  -1.316e+08
                     ----------
adjusted variance     8.636e+15

Ho: dosis(gender==m) = dosis(gender==W)
             z =  -0.354
    Prob > |z| =   0.7236


 -                             

because of theorie in my books and referencebook in Stata is not
"exactly the same" I want to assure about denotation of results ?
z= -0.354 is check-value   - o.k.
but I don't understand : Prob > |z| =   0.7236
Confidence-intervall that H0 is right - is ~72%  ??
but what does mean : Prob > |z| ?

any help will be appreciated very much

andreas aschbacher


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