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