[SciPy-User] fisherexact.py returns None

Pete Shepard peter.shepard@gmail....
Sun Dec 20 11:26:30 CST 2009


I am using a fisher exact test I got from
http://projects.scipy.org/scipy/attachment/ticket/956/fisher.py. This
program takes in two tuples and returns an odds ratio and a  p-value. Most
tuples are handled nicely by the script but certain tuples eg "[[6, 1], [1,
6]]" return "None". I am wondering if anyone knows why this is true?

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