PHP Class MathPHP\Probability\Distribution\Continuous\Beta

Inheritance: extends Continuous

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Méthodes publiques

Méthode	Description
CDF ( number $x, number $α, number $β ) : float	Cumulative distribution function
PDF ( number $x, number $α, number $β ) : float	Probability density function
mean ( number $α, number $β ) : number	Mean of the distribution

Method Details

CDF() public static méthode

cdf = Iₓ(α,β)

public static CDF ( number $x, number $α, number $β ) : float
$x	number	x ∈ (0,1)
$α	number	shape parameter α > 0
$β	number	shape parameter β > 0
Résultat	float

PDF() public static méthode

xᵃ⁻¹(1 - x)ᵝ⁻¹ pdf = -------------- B(α,β)

public static PDF ( number $x, number $α, number $β ) : float
$x	number	x ∈ (0,1)
$α	number	shape parameter α > 0
$β	number	shape parameter β > 0
Résultat	float

mean() public static méthode

α μ = ----- α + β

public static mean ( number $α, number $β ) : number
$α	number	shape parameter α > 0
$β	number	shape parameter β > 0
Résultat	number