Question: Data on dating. A student wonders if tall women tend to date taller men than do short women. She measures herself, her dormitory roommate, and the women in the adjoining rooms; then she measures the next man each woman dates. Here are the data (heights in inches)

(a) Make a scatterplot of these data. Based on the scatterplot, do you expect the correlation to be positive or negative?

(b) Find the correlation r.