Construct a stem-and-leaf display of the number of cars that pass through the payment point mentioned in Exercise 2.15. Then find the interquartile range.

Data From Exercise 2.15

A tennis coach kept a record of the most serious type of errors made by each player during a 1-week training camp. The data are stored in the data file Tennis.
a. Construct a Pareto diagram of total errors committed by all players.
b. Construct a Pareto diagram of total errors committed by male players.
c. Construct a Pareto diagram of total errors committed by female players.
d. Construct a component bar chart showing type of error and gender of the player.