stats_dens_pmf_negative_binomial
Probability mass function of the negative binomial distribution
説明
float stats_dens_pmf_negative_binomial(float $x, float $n, float $pi)
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.
パラメータ
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x
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The value at which the probability mass is calculated
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n
-
The number of the success of the distribution
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pi
-
The success rate of the distribution
戻り値
The probability mass at x or false for failure.