The chi-square distribution is used in:
A) a goodness-of-fit test.
B) a test of a contingency table.
C) making inferences about a single population variance.
D) comparing proportions from independent samples.
E) all of these answers are correct.

Question

Quizplus · Accepted Answer

The chi-square distribution can be used in all of the scenarios listed above. For a goodness-of-fit test, the chi-square distribution is used to determine if observed data matches an expected distribution. In a test of a contingency table, the chi-square distribution is used to determine if there is a relationship between two categorical variables. In making inferences about a single population variance, the chi-square distribution is used as part of a hypothesis test. And in comparing proportions from independent samples, the chi-square distribution is used to determine if the difference in proportions is significant.

The Chi-Square Distribution Is Used In