stats_dens_f

(PECL stats >= 1.0.0)

stats_dens_fProbability density function of the F distribution

Descrição

float stats_dens_f ( float $x , float $dfr1 , float $dfr2 )

Returns the probability density at x, where the random variable follows the F distribution of which the degree of freedoms are dfr1 and dfr2.

Parâmetros

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

Valor Retornado

The probability density at x or FALSE for failure.

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