A chi-square test for goodness of fit has df = 2.How many categories were used to classify the individuals in the sample?
A)two
B)three
C)four
D)five

Question

A chi-square test for goodness of fit has df = 2.How many categories were used to classify the individuals in the sample?​
A)​two
B)​three
C)​four
D)​five

Quizplus · Accepted Answer

The degrees of freedom (df) for a chi-square test for goodness of fit is calculated as the number of categories minus one. Therefore, if df = 2, then there were 3 categories (2 + 1 = 3).

A Chi-Square Test for Goodness of Fit Has Df =