When to use chi square test

Answer

There are two types of chi-square test, chi-square goodness of fit test and chi-square test for independence.

Generally, chi-square tests are essential for testing relationships between categorical variables.

However, the chi-square goodness of fit test is used to compare whether the observed sample data are representative of a particular population, while the chi-square test for independence compares two categorical variables in a contingency table to see if they are related.

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