stats_dens_gamma
(PECL stats >= 1.0.0)
stats_dens_gamma — Probability density function of the gamma distribution
说明
stats_dens_gamma
( float
$x
, float $shape
, float $scale
) : float
Returns the probability density at x, where the
random variable follows the gamma distribution of which the shape parameter
is shape and the scale parameter is scale.
参数
-
x -
The value at which the probability density is calculated
-
shape -
The shape parameter of the distribution
-
scale -
The scale parameter of the distribution
返回值
The probability density at x or FALSE for failure.