Generates a random deviate from the F distribution

# 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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