Which of the following is an appropriate null hypothesis for a chi-square test of independence?
A)The row and column variables are independent in the population.
B)The means of populations A and B are equal.
C)The mean of the population is equal to the mean of the sample.
D)The distribution of scores for population A is identical to the distribution of scores for population B.

Question

Quizplus · Accepted Answer

A chi-square test of independence is used to determine if there is a relationship between two categorical variables. The appropriate null hypothesis for this test is that the row and column variables (i.e. the two categorical variables being compared) are independent in the population. This means that there is no relationship between the two variables in the population and any observed relationship in the sample is due to chance. The other options (B, C, and D) are null hypotheses for other statistical tests and are not appropriate for a chi-square test of independence.

Which of the Following Is an Appropriate Null Hypothesis for a Chi-Square