The file NBACost contains the total cost ($) for four tickets purchased on the secondary market, two beers, two soft drinks, two hot dogs, and one parking space at each of the 30 National Basketball Association arenas during a recent 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 basketball game concentrated? Explain.

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222.67 262.50 262.67 276.40 278.00 290.83 292.87 298.00 318.67 324.33 332.93 345.09 346.70 380.67 398.55 418.14 422.45 423.50 429.00 441.00 492.71 505.77 539.68 571.50 585.20 696.33 718.50 726.40 789.20 878.20