title: Nonparametric testing using the chi-square distribution.
abstract: We have described three separate uses of the chi-square distribution: comparing observed and expected frequency distributions of a nominal variable, testing for the independence of two variables, and using the chi-square test in determining correlation coefficients. We hope this paper has helped you gain an understanding of the uses of the chi-square test and the steps required to calculate this statistic.
mesh_terms: D006801:Humans; D026741:Physical Therapy Modalities; D013223:Statistics as Topic