The file NBACost2013 contains the total cost ( in $) for four average- priced tickets, two beers, four soft drinks, four hot dogs, two game programs, two adult- sized caps, and one parking space at each of the 30 National Basketball Association are-nas during the 2013– 2014 season. ( Data extracted “ NBA FCI 13- 14 Fan Cost Experience,” bit. ly/ 1nnu9rf.)
a. Construct a stem- and- leaf display.
b. Around what value, if any, are the costs of attending a basket-ball game concentrated? Explain.