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