[SciPy-User] No Wilcoxon test in scipy ?
josef.pktd at gmail.com
josef.pktd at gmail.com
Wed Mar 31 07:16:24 EDT 2010
On Wed, Mar 31, 2010 at 6:16 AM, Axel Kowald <axel.kowald at gmail.com> wrote:
> Hello everybody,
>
> I'm using scipy 0.7.1 and try to find the Wilcoxon test, i.e. a
> non-parametric test for paired observations.
> Am I right, that there is no Wilcoxon test in SciPy ?!
> In the function summary of
> http://www.scipy.org/doc/api_docs/SciPy.stats.stats.html I could not
> find anything with Wilcoxon.
>
> I'm only a bit confused, because at the beginning of this website the
> Wilcoxon test is listet:
>
> INFERENTIAL STATS: ttest_1samp
> ttest_ind
> ttest_rel
> chisquare
> ks_2samp
> mannwhitneyu
> ranksums
> wilcoxon <===============
> kruskal
> friedmanchisquare
>
>
> So, is the Wilcoxon test implemented in SciPy or not ?
>
> Many thanks,
>
> Axel
the new documentation is here:
http://docs.scipy.org/doc/scipy/reference/generated/scipy.stats.wilcoxon.html?highlight=wilcoxon#scipy.stats.wilcoxon
the api_docs are outdated
>>> help(scipy.stats.wilcoxon)
Help on function wilcoxon in module scipy.stats.morestats:
wilcoxon(x, y=None)
Calculate the Wilcoxon signed-rank test
The Wilcoxon signed-rank test tests the null hypothesis that two
related samples come from the same distribution. It is a a
non-parametric version of the paired T-test.
a good comparison of the non-parametric tests is in this ticket
http://projects.scipy.org/scipy/ticket/901
Josef
>
>
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