# [Rd] Help: StatXact

**Uwe Ligges
**
ligges@statistik.uni-dortmund.de

*Mon, 18 Dec 2000 19:01:40 +0100*

Torsten Hothorn wrote:
>*
*>* 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
*
Hi Torsten!
I could do it tomorrow, when I am back in office (Stat-Xact 3 ???), if
you like ...
Uwe
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