Class Level and College. Refer to Table 13.11. Consider the variables “class level” and “college.”

a. Group the bivariate data for these two variables into a contingency table.

b. Determine the conditional distribution of class level within each college and the marginal distribution of class level.

c. Determine the conditional distribution of college within each class level and the marginal distribution of college.

d. Does an association exist between the variables “class level” and

“college” for this population? Explain your answer.

Table 13.12 provides hypothetical data on political party affiliation and class level for the students in a night-school course.

TABLE 13.12 Political party affiliation and class level for the students in a night-school course (hypothetical data)

Party Class Party Class Party Class Rep Jun Rep Soph Rep Jun Dem Soph Other Jun Rep Soph Dem Jun Dem Soph Rep Soph Other Jun Rep Soph Rep Fresh Dem Jun Dem Sen Rep Soph Dem Fresh Rep Jun Rep Jun Dem Soph Dem Jun Rep Sen Dem Sen Dem Jun Rep Jun Other Sen Rep Sen Dem Soph Dem Fresh Rep Fresh Rep Jun Rep Jun Rep Jun Other Jun Rep Jun Dem Jun Dem Jun Dem Sen Rep Sen Other Soph Rep Jun Rep Sen Rep Sen Dem Sen Rep Sen Other Soph Rep Jun Dem Soph Rep Soph Rep Soph Other Fresh Other Soph Rep Fresh Rep Soph Other Sen Rep Jun Other Jun Rep Soph Dem Soph Dem Jun Dem Jun