Pearson Chi. Chi square χ2 test for independence pearson chi square test chi square test is a non parametric distribution free method used to compare the relationship between the two categorical nominal variables in a contingency table. Pearson s chi squared test displaystyle chi 2 is a statistical test applied to sets of categorical data to evaluate how likely it is that any observed difference between the sets arose by chance.
Chi square χ2 test for independence pearson chi square test chi square test is a non parametric distribution free method used to compare the relationship between the two categorical nominal variables in a contingency table. This test is used when we have categorical data for two independent variables and we want to see if there is any relationship between the variables. Let s take another example to understand this.
There are two ways that the chi squared test is used.
This test is used when we have categorical data for two independent variables and we want to see if there is any relationship between the variables. For example to see if the distribution of males and females differs between control and treated groups of an experiment requires a pearson s chi square test. Let s take another example to understand this. Chi square test for association independence the second type of chi square test is the pearson s chi square test of association.
