Chi-Square Tests

Definition

Chi-square tests are statistical tests used to determine if there is a significant association between two categorical variables. It compares the observed frequencies with the expected frequencies to assess whether any differences are due to chance or not.

Related terms

Categorical Data: Categorical data refers to data that can be divided into categories or groups, such as colors, types of cars, or favorite movies.

Chi-Square Test for Goodness of Fit: The chi-square test for goodness of fit is a specific type of chi-square test used when comparing observed frequencies with expected frequencies for one categorical variable.

Contingency Table: A contingency table is a table that displays the frequency distribution of two or more categorical variables. It helps visualize relationships between variables in chi-square tests.