Wayne Gretzky. In Exercise 34, you examined the number of games played by hockey great Wayne Gretzky during his 20-year career in the NHL.

a) Would you use the median or the mean to describe the center of this distribution? Why?

b) Find the median.

c) Without actually finding the mean, would you expect it to be higher or lower than the median? Explain.

Exercise 34

The Great One. During his 20 seasons in the NHL, Wayne Gretzky scored 50% more points than anyone who ever played professional hockey. He accomplished this amazing feat while playing in 280 fewer games than Gordie Howe, the previous record holder. Here are the number of games Gretzky played during each season: 79, 80, 80, 80, 74, 80, 80, 79, 64, 78, 73, 78, 74, 45, 81, 48, 80, 82, 82, 70

a) Create a stem-and-leaf display for these data, using split stems.

b) Describe the shape of the distribution.

c) Describe the center and spread of this distribution. d) What unusual feature do you see? What might explain this?