Hi,

I stumbled upon something I think is a bug in scipy:

In [4]: stats.randint(1.,15.).ppf([.1,.2,.3,.4,.5])
Out[4]: array([ 2.,  3.,  5.,  6.,  7.])

When you pass float arguments to stats.randint and then call the ppf method,
you get an array of floats, which clearly wrong. The rvs method doesn't
display this bug so I think is a matter of poor type checking in the ppf
implementation...

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Flávio Codeço Coelho
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