PHP Manual
Statistic 関数
Probability density function of the chi-square distribution

stats_dens_chisquare

(PECL stats >= 1.0.0)

stats_dens_chisquare — Probability density function of the chi-square distribution

説明

function stats_dens_chisquare(float $x, float $dfr): float

Returns the probability density at x, where the random variable follows the chi-square distribution of which the degree of freedom is dfr.

パラメータ

x: The value at which the probability density is calculated
dfr: The degree of freedom of the distribution

戻り値

The probability density at x or false for failure.

関連キーワード:

density stats dens square Probability chisquare float probability degree freedom cauchy exponential Statistic random variable follows calculated failure

関連する関数・ページ:

function.stats-dens-t function.stats-dens-f function.stats-dens-normal function.stats-dens-cauchy function.stats-dens-exponential function.stats-dens-beta