# chi-square test

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## chi-square test

*n.*

A test that uses the chi-square statistic to test the fit between a theoretical frequency distribution and a frequency distribution of observed data for which each observation may fall into one of several classes.

## chi-square test

*n*

(Statistics)

*statistics*a test derived from the chi-square distribution to compare the goodness of fit of theoretical and observed frequency distributions or to compare nominal data derived from unmatched groups of subjects## chi′-square`

## (or **chi′-squared`**) **test`,**

*n.*

a test that uses the quantity chi-square for testing the mathematical fit of a frequency curve to an observed frequency distribution.

[1935–40]

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