Nonparametric statistics have gained appreciation due to their ease of use. As the need for parameters is relieved, the data becomes more applicable to a larger variety of tests. This type of statistics can be used without the mean, sample size, standard deviation, or the estimation of any other related parameters when none of that information is available.
непараметрическая статистика; техника статистического анализа, не предусматривающая предположений относительно точной формы распределения генеральной совокупности.