MathPHP\Probability\Distribution\Discrete\ShiftedGeometric::PMF PHP 메소드

ShiftedGeometric 1 문서 파일 보기 프로젝트 열기: markrogoyski/math-php

PMF() 공개 정적인 메소드

The probability distribution of the number X of Bernoulli trials needed to get one success, supported on the set { 1, 2, 3, ...} https://en.wikipedia.org/wiki/Geometric_distribution k trials where k ∈ {1, 2, 3, ...} pmf = (1 - p)ᵏ⁻¹p

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

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

ShiftedGeometric

CDF

PMF