# [Rd] Help: StatXact

**Torsten Hothorn
**
Torsten.Hothorn@rzmail.uni-erlangen.de

*Mon, 18 Dec 2000 18:43:37 +0100 (MET)*

Help needed!
Has anyone access to StatXact? I just hacked exact two-sided p-values for
rank tests (for package exactDistr, which will move to CRAN/contrib as
exactRankTests soon ;-) and would like to compare the results of my
implementation to that of StatXact. Could someone please calculate the
exact one-sided (both greater and less) and two-sided p-values?
# Data from the StatXact-4 manual, page 221
treat <- c(94, 108, 110, 90)
contr <- c(80, 94, 85, 90, 90, 90, 108, 94, 78, 105, 88)
My results:
>* wilcox.exact(x,y)
*
Wilcoxon rank sum test
data: x and y
W = 52, p-value = 0.8963
alternative hypothesis: true mu is not equal to 0
>* wilcox.exact(x,y, alternative="l")
*
Wilcoxon rank sum test
data: x and y
W = 52, p-value = 0.5656
alternative hypothesis: true mu is less than 0
>* wilcox.exact(x,y, alternative="g")
*
Wilcoxon rank sum test
data: x and y
W = 52, p-value = 0.4636
alternative hypothesis: true mu is greater than 0
Thanks!
Torsten
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