stats_rand_gen_f

(PECL stats >= 1.0.0)

stats_rand_gen_f ¡ª Generates a random deviate from the F distribution

Description

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

¡û stats_rand_gen_exponential

stats_rand_gen_funiform ¡ú

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https://secure.php.net/manual/en/function.stats-rand-gen-f.php