Question: Question 1:

Car and Driver magazine often provides fuel-economy information about various cars. Miles-per-gallon data for city driving cars were as follows:

21, 23, 29, 29, 35, 26, 24, 24, 21, 38, 30, 31, 25, 20, 39, 37, 35, 34, 22, 36, 29, 20, 23, 24, 39, 25, 30, 30, 28, 33

Summarize the data by construction a frequency distribution. Use 10 intervals.