The Chi-square test of independence

  title={The Chi-square test of independence},
  author={Mary L. McHugh},
  booktitle={Biochemia medica},
The Chi-square statistic is a non-parametric (distribution free) tool designed to analyze group differences when the dependent variable is measured at a nominal level. Like all non-parametric statistics, the Chi-square is robust with respect to the distribution of the data. Specifically, it does not require equality of variances among the study groups or homoscedasticity in the data. It permits evaluation of both dichotomous independent variables, and of multiple group studies. Unlike many… CONTINUE READING