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