On 2009-08-26 11:49 AM, Colin J. Williams wrote:
Pierre wrote:
Hello...
Do you know how I can calculate the quantiles of a student
distribution in pyhton ?
Thanks
You might look at:
http://bonsai.ims.u-tokyo.ac.jp/~mdehoon/software/python/special.html
[Please pardon the piggybacking. I have not gotten the original, yet.]
Using scipy:
In [1]: from scipy import stats
In [2]: import numpy as np
In [3]: x = np.linspace(-1.0, 1.0, 21)
In [4]: x
Out[4]:
array([-1. , -0.9, -0.8, -0.7, -0.6, -0.5, -0.4, -0.3, -0.2, -0.1, 0. ,
0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1. ])
In [5]: ndof = 10
In [6]: stats.t.cdf(x, ndof)
Out[6]:
array([ 0.17044657, 0.19463963, 0.22115021, 0.24994379, 0.28092759,
0.3139468 , 0.3487837 , 0.3851603 , 0.4227446 , 0.46116036,
0.5 , 0.53883964, 0.5772554 , 0.6148397 , 0.6512163 ,
0.6860532 , 0.71907241, 0.75005621, 0.77884979, 0.80536037,
0.82955343])
--
Robert Kern
"I have come to believe that the whole world is an enigma, a harmless enigma
that is made terrible by our own mad attempt to interpret it as though it had
an underlying truth."
-- Umberto Eco
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