[R] effect sizes for Wilcoxon tests

[Peter Dalgaard]

Torsten Hothorn <Torsten.Hothorn at rzmail.uni-erlangen.de> writes:
[snip]

> > > However, how do I get Z from a Wilcoxon test in R?
> >
> > wtest <- wilcox.test(y~group,data=d, alternative="greater")
> > qnorm(wtest$p.value)
> >
> 
> or
> 
> library("coin")
> statistic(wilcox_test(y ~ group, data = d, ...), type = "standardized")
> 
> where the variance `estimator' takes care of tied observations.

Doesn't it do that in the same way as inside wilcox.test(...,exact=FALSE)?

Just wondering.

        -p

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