PHP - Manual: stats_rand_gen_f
2024-12-24
(PECL stats >= 1.0.0)
stats_rand_gen_f — Generates a random deviate from the F distribution
$dfn
, float $dfd
) : floatGenerates a random deviate from the F (variance ratio) distribution with "dfn" degrees of freedom in the numerator and "dfd" degrees of freedom in the denominator. Method : directly generates ratio of chisquare variates.
dfn
The degrees of freedom in the numerator
dfd
The degrees of freedom in the denominator
A random deviate
官方地址:https://www.php.net/manual/en/function.stats-rand-gen-f.php