chi-square distribution

== English == === Alternative forms === chi-squared distribution χ² distribution === Noun === chi-square distribution (plural chi-square distributions) (statistics) A probability distribution widely used in inferential statistics. 1992, Harold R. Lindman, Analysis of Variance in Experimental Design, Springer, Softcover Reprint, page 7, The chi-square distribution with ν {\displaystyle \nu } degrees of freedom is defined to be the distribution of the sum of ν {\displaystyle \nu } independent squared random variables, each having the standard normal distribution. ==== Usage notes ==== The synonym central chi-square distribution is sometimes used in distinction with the more general noncentral chi-square distribution. ==== Synonyms ==== (probability distribution): central chi-square distribution ==== Related terms ==== chi-square test ==== Translations ==== === See also === chi distribution