If you wanted to measure the strength of the association between the age of people and the number of arrests for driving while intoxicated, the most appropriate measure of association would be:

a. Lambda

b. Gamma

c. Pearson's r

d.Kendall's tau-b

If both the dependent and independent variables have two values and the control variable has three values, how many partial tables would be produced?

a. three

b. four

c. two

d. twelve