MathPHP\Probability\Distribution\Discrete\Geometric::PMF PHP Method

Geometric Class Documentation Mostra file Open project: markrogoyski/math-php

PMF() public static method

The probability distribution of the number Y = X − 1 of failures before the first success, supported on the set { 0, 1, 2, 3, ... } https://en.wikipedia.org/wiki/Geometric_distribution k failures where k ∈ {0, 1, 2, 3, ...} pmf = (1 - p)ᵏp

public static PMF ( integer $k, float $p ) : float
$k	integer	number of trials k ≥ 1
$p	float	success probability 0 < p ≤ 1
return	float

    public static function PMF(int $k, float $p) : float
    {
        Support::checkLimits(self::LIMITS, ['k' => $k, 'p' => $p]);
        $⟮1 − p⟯ᵏ = pow(1 - $p, $k);
        return $⟮1 − p⟯ᵏ * $p;
    }

Geometric

CDF

PMF