stats_dens_f
(PECL stats >= 1.0.0)
stats_dens_f — Probability density function of the F distribution
Описание
stats_dens_f
( float
$x
, float $dfr1
, float $dfr2
) : float
Returns the probability density at x, where the
random variable follows the F distribution of which the degree of freedoms
are dfr1 and dfr2.
Список параметров
-
x -
The value at which the probability density is calculated
-
dfr1 -
The degree of freedom of the distribution
-
dfr2 -
The degree of freedom of the distribution
Возвращаемые значения
The probability density at x or false for failure.