For Exercise 1.70, see page 40; for 1.71 to 1.73, see pages 41-42; for 1.74 to 1.77, see pages 44-45; for 1.78, see page 46; for 1.79 and 1.80, see page 49; for 1.81 and 1.82, see page 50; and for 1.83 and 1.84, see page 53.

Question 1.84

1.84 Fuel efficiency.

Figure 1.31 is a Normal quantile plot for the fuel efficiency data. We looked at these data in Example 1.28. A histogram was used to display the distribution in Figure 1.17 (page 39). This distribution is approximately Normal.

  1. How is this fact displayed in the Normal quantile plot?
  2. Does the plot reveal any deviations from Normality? Explain your answer.

canfuel