stats_rand_gen_noncentral_f

(PECL stats >= 1.0.0)

stats_rand_gen_noncentral_f — Generates a random deviate from the noncentral F distribution

说明

stats_rand_gen_noncentral_f ( float $dfn , float $dfd , float $xnonc ) : float

Returns a random deviate from the non-central F distribution where the degrees of freedoms are dfn (numerator) and dfd (denominator), and the non-centrality parameter is xnonc.

参数

dfn

The degrees of freedom of the numerator

dfd

The degrees of freedom of the denominator

xnonc

The non-centrality parameter

返回值

A random deviate

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