Testing Categorical Probabilities: Two-Way Table (chi-square test of independence), Problem 3

In this video, we demonstrate how to conduct a chi-square test of independence. We calculate the expected values for a two-way contingency table under the assumption that the two categories are independent, and we calculate the test statistic by hand. We define the degrees of freedom for the test, and we demonstrate how to use a typical chi-square table to find the chi-square critical value.
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