The file BBcost2011 contains the total cost ($) for four tickets, two beers, four soft drinks, four hot dogs, two game programs, two baseball caps, and parking for one vehicle at each of the 30 Major League Baseball parks during the 2011 season. These costs were

a. Organize these costs as an ordered array.
b. Construct a frequency distribution and a percentage distribution for these costs.
c. Around which class grouping, if any, are the costs of attending a baseball game concentrated? Explain.