The table below shows estimates of the total cost of repairs in four bumper tests (full frontal,

Question:

The table below shows estimates of the total cost of repairs in four bumper tests (full frontal, front corner, full rear, rear corner) on 17 cars.
(a) Calculate the mean and median.
(b) Would you say the data are skewed?
(c) Why is the mode not useful for these data? (Data are from Insurance Institute for Highway Safety, Detroit Free Press, March 1, 2007, p. 2E).