If we wish to determine whether there is evidence that the proportion of items of interest is the same in group 1 as in group 2, the appropriate test to use is
A) the Z test.
B) the χ² test.
C) both A and B
D) neither A nor B.

Question

Quizplus · Accepted Answer

The chi-square test is used to compare the proportions of items of interest in two or more groups. The Z test is used to compare the means of two groups.

If We Wish to Determine Whether There Is Evidence That