The chi-square (χ 2) test is an important test which can be used to assess a relationship between two categorical variables. It is one example of a nonparametric test. A chi-squared test is any statistical hypothesis test in which the sampling distribution of the test statistic is a chi-...
The sum of the expected frequencies is always equal to the sum of the observed frequencies. The chi-squared statistic can be used to: Test if a distribution is a good fit for population (Goodness-of-Fit) Test association of two attribute variables (Test for Independence) Chi-square Applicatio...
an approximate chi-square statistic is calculated from the p-value of Fisher’s exact test using the CHISQ.INV function, from which the phi and Cramer’sVeffect sizes can be calculated as described above