12.14 Gas mileage. Table 11.2 (page 261) gives the highway gas mileages for some model year 2015 mid-sized cars.
(a) Make a stemplot of these data if you did not do so in Exercise 11.13.
(b) Find the five-number summary of gas mileages. Which cars are in the bottom quarter of gas mileages?
(c) The stemplot shows a fact about the overall shape of the distribution that the five-number summary cannot describe. What is it?