Party and Class. Refer to Table 13.12.

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

b. Determine the conditional distribution of political party affiliation within each class level.

c. Are the variables “political party affiliation” and “class level” for this population of night-school students associated? Explain your answer.

d. Without doing any further calculation, determine the marginal distribution of political party affiliation.

e. Without doing further calculation, respond true or false to the following statement and explain your answer: “The conditional distributions of class level within political party affiliations are identical to each other and to the marginal distribution of class level.”