PHPWales 2020 - June 3rd to June 4th

stats_dens_pmf_negative_binomial

(PECL stats >= 1.0.0)

stats_dens_pmf_negative_binomialProbability mass function of the negative binomial distribution

Description

stats_dens_pmf_negative_binomial ( float $x , float $n , float $pi ) : float

Returns the probability mass at x, where the random variable follows the negative binomial distribution of which the number of the success is n and the success rate is pi.

Parameters

x

The value at which the probability mass is calculated

n

The number of the success of the distribution

pi

The success rate of the distribution

Return Values

The probability mass at x or FALSE for failure.

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