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bundles / scipy 1.17.1 / scipy / stats / _distn_infrastructure / rv_discrete / isf

function

scipy.stats._distn_infrastructure:rv_discrete.isf

source: /scipy/stats/_distn_infrastructure.py :3791

Signature

def   isf ( self ,  q ,  * args ,  ** kwds )

Summary

Inverse survival function (inverse of sf) at q of the given RV.

Parameters

q : array_like

Upper tail probability.

arg1, arg2, arg3,... : array_like

The shape parameter(s) for the distribution (see docstring of the instance object for more information).

loc : array_like, optional

Location parameter (default=0).

Returns

k : ndarray or scalar

Quantile corresponding to the upper tail probability, q.

Notes

For discrete distributions, the sf is not strictly invertible. By convention, this method returns the minimum value k for which the sf at k is no greater than q. There is one exception: the isf of 1 is a-1, where a is the left endpoint of the support.

Aliases

  • scipy.stats.rv_discrete.isf