1.151 What graph would you use? What type of graph or graphs would you plan to make in a study of each of the following issues?
(a) What makes of cars do students drive? How old are their cars?
(b) How many hours per week do students study? How does the number of study hours change during a semester?
(c) Which radio stations are most popular with students?
(d) When many students measure the concentration of the same solution for a chemistry course laboratory assignment, do their measurements follow a Normal distribution?