stats_dens_pmf_hypergeometric

    (PECL stats >= 1.0.0)

    stats_dens_pmf_hypergeometric — Probability mass function of the hypergeometric distribution

    说明

    stats_dens_pmf_hypergeometric(
        float $n1,
        float $n2,
        float $N1,
        float $N2
    ): float

    Returns the probability mass at n1, where the random variable follows the hypergeometric distribution of which the number of failure is n2, the number of success samples is N1, and the number of failure samples is N2.

    参数

    n1

    The number of success, at which the probability mass is calculated

    n2

    The number of failure of the distribution

    N1

    The number of success samples of the distribution

    N2

    The number of failure samples of the distribution

    返回值

    The probability mass at n1 or false for failure.

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