MathPHP\Statistics\RandomVariable::isLeptokurtic PHP Метод

Is the kurtosis postive? (Leptokurtic) Indicates a peaked distribution.

public static isLeptokurtic ( array $X ) : boolean
$X	array	list of numbers (random variable X)
Результат	boolean	true if leptokurtic

    public static function isLeptokurtic(array $X) : bool
    {
        return self::kurtosis($X) > 0;
    }

RandomVariable