stats_dens_pmf_poisson
(PECL stats >= 1.0.0)
stats_dens_pmf_poisson — Probability mass function of the Poisson distribution
説明
Returns the probability mass at x, where the random variable
follows the Poisson distribution whose parameter is lb.
パラメータ
-
x -
The value at which the probability mass is calculated
-
lb -
The parameter of the Poisson distribution
戻り値
The probability mass at x or false for failure.
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