stats_rand_gen_ibinomial_negative
(PECL stats >= 1.0.0)
stats_rand_gen_ibinomial_negative — Generates a random deviate from the negative binomial distribution
说明
stats_rand_gen_ibinomial_negative (
int
$n
,
float $p
) :
int
Returns a random deviate from a negative binomial distribution where the number of success is n
and the success rate is p
.
参数
-
n
-
The number of success
-
p
-
The success rate
返回值
A random deviate, which is the number of failure.