In a 2006 study, Gortmake and colleagues surveyed 80 lesbian and gay students at a large Midwestern state university to assess their experiences and their perceptions of the campus climate regarding lesbians and gays.One of the questions the researchers were interested in was whether a person's "outness" depended on his or her class in school (freshman, sophomore, junior, or senior).All participants were classified as closeted or as out.What are the degrees of freedom associated with the chi-square analysis of these data?
A) 8
B) 4
C) 3
D) 2

Question

Quizplus · Accepted Answer

The degrees of freedom for a chi-square analysis of contingency tables (such as this one) are calculated using the formula df = (r-1) x (c-1), where r is the number of rows and c is the number of columns in the table. In this case, there are 2 categories (closeted versus out) and 4 classes (freshman, sophomore, junior, and senior), so the table is a 2x4 contingency table. Therefore, df = (2-1) x (4-1) = 3.

In a 2006 Study, Gortmake and Colleagues Surveyed 80 Lesbian