Based on the total passenger traffic, the airports in the following list are the 25 busiest airports in the world in 2021 (Airports Council International website).

a. Which is busiest airport in the world in terms of total passenger traffic? Which is the least busy airport in terms of total passenger traffic?

b. Using a bin width of 10, develop a frequency distribution of the data using bins of [20, 30], (30, 40], (40, 50], and so on.

c. Create and interpret a histogram for this distribution of data.

d. Create a frequency polygon to compare the distribution of total passenger traffic for airports located in the United States to the distribution of total passenger traffic for airports located outside the United States. What can you infer about these distributions relative to one another from the frequency polygon?

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Airport Airport Code Total Passen- Location (country) gers (millions) Beijing Capital PEK China 32.6 Charlotte Douglas CLT United States 43.3 Chengdu Shuangliu CTU China 40.1 Chongqing Jiangbei CKG China 35.8 Dallas Fort Worth DFW United States 62.5 Denver DEN United States 58.8 Dubai DXB United Arab Emirates 29.1 George Bush IAH United States 33.7 Guangzhou Baiyun CAN China 40.2 Harry Reid LAS United States 39.7 Hartsfield-Jackson Atlanta ATL United States 75.5 Istanbul Airport IST Turkey 37.0 Kunming Changshui KMG China 32.2 Los Angeles LAX United States 48.0 Mexico City MEX Mexico 36.1 Miami MIA United States 37.3 O'Hare ORD United States 54.0 Orlando MCO United States 40.4 Phoenix Sky Harbor PHX United States 38.8 Seattle-Tacoma SEA United States 36.2 Shanghai Hongqiao SHA China 33.2 Shanghai Pudong PVG China 32.2 Shenzhen Bao'an SZX China 36.4 Sheremetyevo SVO Russia 30.9 Xi'an Xianyang XIY Asia 30.2