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