A study of students at Oregon State University found an association between frequency of church attendance and favorability toward the legalization of marijuana.

Both variables were measured in ordered categories.

Controlling for gender, the gamma measures for the two partial tables were Males: gamma= −0.287, standard error = 0.081.

Females: gamma= −0.581, standard error = 0.091.

(a) These results show a slight degree of , since the association is somewhat stronger for females than males.

(b) Construct and interpret a 95% confidence interval for the difference between the population gamma values.

Concepts and Applications