Question: Does the amount that people exercise correlate with the number of friends they have? The accompanying table contains data collected in some of our statistics classes. The first and third columns show hours exercised per week and the second and fourth columns show the number of close friends reported by each participant.

a. Create a scatterplot of these data. Be sure to label both axes.

b. What does the scatterplot suggest about the relation between these two variables?

c. Would it be appropriate to calculate a Pearson correlation coefficient? Explain your answer.