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.
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