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stats_rand_gen_gamma

(PECL stats >= 1.0.0)

stats_rand_gen_gamma — Generates a random deviate from the gamma distribution

説明

function stats_rand_gen_gamma(float $a, float $r): float

Generates a random deviate from the gamma distribution whose density is (A**R)/Gamma(R) * X**(R-1) * Exp(-A*X).

パラメータ

a

location parameter of Gamma distribution (a > 0).

r

shape parameter of Gamma distribution (r > 0).

戻り値

A random deviate

関連キーワード:
gamma   stats   random   deviate   rand   Generates   float   Gamma   parameter   funiform   ibinomial   Statistic   density   location   shape
関連する関数・ページ:
function.stats-rand-gen-t   function.stats-rand-gen-normal   function.stats-rand-gen-ibinomial   function.stats-rand-gen-chisquare   function.stats-rand-gen-f   function.stats-rand-gen-beta