[R] anomalous result for wilcox.exact in exactRankTests
Roger Levy
rog at stanford.edu
Mon Mar 21 06:21:49 CET 2005
Hi,
In the exactRankTest package, I've become aware that you can get
anomalous p-values (i.e., above 1) from the wilcox.exact method, as in:
> wilcox.exact(c(-0.6,0.8,-0.5))
Exact Wilcoxon signed rank test
data: c(-0.6, 0.8, -0.5)
V = 3, p-value = 1.25
alternative hypothesis: true mu is not equal to 0
This is disturbing. Has anyone encountered this before, and if so is
there an obvious reason why this should happen?
Thanks,
Roger
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