# 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.