bundles / scipy 1.17.1 / scipy / stats / _continuous_distns / exponweib_gen

class

`scipy.stats._continuous_distns:exponweib_gen`

source: /scipy/stats/_continuous_distns.py :2262

Signature

   class     exponweib_gen (    momtype    =  1   ,    a    =  None   ,    b    =  None   ,    xtol    =  1e-14   ,    badvalue    =  None   ,    name    =  None   ,    longname    =  None   ,    shapes    =  None   ,    seed    =  None     )

Members

Summary

An exponentiated Weibull continuous random variable.

Extended Summary

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Notes

The probability density function for exponweib is:

f (x, a, c) = a c [1 - exp (- x^{c})]^{a - 1} exp (- x^{c}) x^{c - 1}

and its cumulative distribution function is:

F (x, a, c) = [1 - exp (- x^{c})]^{a}

for $x > 0$ , $a > 0$ , $c > 0$ .

exponweib takes $a$ and $c$ as shape parameters:

$a$ is the exponentiation parameter, with the special case $a = 1$ corresponding to the (non-exponentiated) Weibull distribution weibull_min.
$c$ is the shape parameter of the non-exponentiated Weibull law.

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See also

numpy.random.Generator.weibull
weibull_min

Aliases

scipy.stats._continuous_distns.exponweib_gen