[SciPy-user] using tcdf
David M. Cooke
cookedm at physics.mcmaster.ca
Fri Feb 24 17:27:33 EST 2006
Miles Lubin <miles at lubin.us> writes:
> Hi,
>
> I've looked through the documentation and the help for the stats module,
> but I haven't be able to find any examples of how to use the cdf
> function. Let's say I want n degrees of freedom, and want the cumulative
> probability from the left tail to -x (standard deviations) on a
> t-distribution, how would I generate it?
> On the TI-83+ there's a simple tcdf() function, but I'm lost on how to
> do it in scipy.
The distributions in scipy.stats are objects that have methods that
calculate the interesting stuff. In your case, I think you want
scipy.stats.t.cdf(-x, n)
help(scipy.stats.t) will give you more info about what's implemented.
--
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|David M. Cooke http://arbutus.physics.mcmaster.ca/dmc/
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