stats_rand_gen_f
(PECL stats >= 1.0.0)
stats_rand_gen_f — Generates a random deviate from the F distribution
Description
stats_rand_gen_f ( float $dfn , float $dfd ) : float
Generates 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.
Parameters
-
dfn -
The degrees of freedom in the numerator
-
dfd -
The degrees of freedom in the denominator
Return Values
A random deviate
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https://www.php.net/manual/en/function.stats-rand-gen-f.php