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