chi-square

[ kahy-skwair ]

Phonetic (Standard)IPA

noun

, Statistics.

a quantity equal to the summation over all variables of the quotient of the square of the difference between the observed and expected values divided by the expected value of the variable.

chi-square

/ kī′skwâr′ /

A test statistic that is calculated as the sum of the squares of observed values minus expected values divided by the expected values.

First recorded in 1935–40

The significance of each difference reported was calculated by the Chi-square test and the confidence limit is given in each case.

In a fourfold table, the value of chi-square (14.7) is significant and indicates that the frequencies are not proportional.

April 19, 2024tortuous

[tawr-choo-uhs ]

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