A chi-square test for goodness-of-fit is used to test whether or not there are any preferences among 3 brands of peas. If the study uses a sample of n = 60 subjects, then the expected frequency for each category would be:
A) 20
B) 30
C) 60
D) 33

Question

Quizplus · Accepted Answer

The expected frequency for each category in a chi-square test for goodness-of-fit is calculated by dividing the total sample size by the number of categories. Here, with a sample size of n = 60 and 3 categories (brands), the expected frequency is 60 / 3 = 20 for each category.

A Chi-Square Test for Goodness-Of-Fit Is Used to Test Whether