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

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

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