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qgamma

The gamma inverse distribution function

Calling Sequence

x = qgamma(p,a [,s])

Parameters

p

probability

a,s

positive real, parameter of the gamma distribution (a and scale can be scalar or matrix with common size with p). scale is optional, default value is 1.

x

inverse of the gamma cumulative distribution function of parameter a at p

Description

The gamma inverse distribution function. The gamma distribution is:

s^(a)/Gamma(a) * X^(a-1) * exp(- s*X)
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