What is the idea behind the chi-square test for independence?
A)To compare the quantile-quantile (Q-Q)plot with what would be expected under independence
B)To compare the actual counts in a contingency table with what would be expected under independence
C)To compare the cumulative distribution with what would be expected under independence
D)To compare the normal distribution with a chi-squared distribution

Question

Quizplus · Accepted Answer

The chi-square test for independence is used to determine if there is a significant association between two categorical variables. It compares the observed frequencies (actual counts) in the cells of a contingency table with the expected frequencies, which are calculated under the assumption that the variables are independent.

What Is the Idea Behind the Chi-Square Test for Independence