[SciPy-user] help with scipy.stats.mannwhitneyu

Sturla Molden sturla@molden...
Thu Feb 5 12:03:34 CST 2009

On 2/5/2009 6:46 PM, josef.pktd@gmail.com wrote:

> so whether bigU or smallU is used in the calculation of z doesn't
> matter, I have no idea why in this specific implementation both are
> calculated if smallU would be enough.

By the way, there is a fucntion scipy.stats.ranksums that does a 
Wilcoxon rank-sum test. It seems to be using a large-sample 
approximation, and has no correction for tied ranks.


More information about the SciPy-user mailing list