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stats_dens_pmf_poisson

(PECL stats >= 1.0.0)

stats_dens_pmf_poisson — Probability mass function of the Poisson distribution

説明

function stats_dens_pmf_poisson(float $x, float $lb): float

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.

関連キーワード:
mass   stats   Poisson   dens   Probability   poisson   float   probability   parameter   negative   binomial   Statistic   random   variable   follows   calculated   failure
関連する関数・ページ:
function.stats-dens-pmf-binomial   function.stats-dens-pmf-negative-binomial   function.stats-dens-pmf-hypergeometric   function.stats-dens-t   function.stats-dens-f   function.stats-dens-normal