What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...

R is the perfect language for creating a variety of chi-square tests, which are used to perform statistical analyses of counts of data. Here's how, with some sample code. A chi-square test (also ...

The Canadian Journal of Statistics / La Revue Canadienne de Statistique, Vol. 29, No. 4 (Dec., 2001), pp. 609-619 (11 pages) The Pearson chi-squared statistic for testing the equality of two ...

The chi-square test, likelihood ratio test, and other goodness of fit tests in a family are shown to have monotonic power functions, and hence are unbiased, for testing a simple hypothesis that all ...