# chi-square test

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## chi-square test

a statistical procedure for determining significant differences between frequencies observed within the data and frequencies that were expected. There are two chi-squared tests: the chi-square test of

*independence,*which tests whether two or more series of frequencies are independent of one another; and the chi-square test of*goodness of fit,*which tests whether an observed frequency distribution fits a specified theoretical model. Written also χ^{2}-test.## chi-square test

a statistical method of assessing the significance of a difference, as when the data from two or more samples, such as the numbers of females and males attending each of two colleges, are represented by a discrete number.

Synonym(s): χ2 test

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