MathPHP\Statistics\Regression\Methods\LeastSquares::cooksD PHP Метод

    public function cooksD() : array
    {
        $e = $this->residuals();
        $h = $this->leverages();
        $mse = $this->meanSquareResidual();
        $p = $this->p + $this->fit_constant;
        return array_map(function ($eᵢ, $hᵢ) use($mse, $p) {
            return $eᵢ ** 2 / $mse / $p * ($hᵢ / (1 - $hᵢ) ** 2);
        }, $e, $h);
    }