Finding the Mean of a Frequency Distribution In Exercises 4952, approximate the mean of thefrequency distrilmn'rm. 49. Fuel Economy The highway mileage (in miles per gallon) for 30 small cars Mileage (in miles per gallon) Frequency 29 33 1 1 3438 12 3943 2 4448 5 51. Ages The ages of the residents of Tse Bonito. New Mexico. in 2010 "5..\" r' .5. (1,1 Age Frequency 09 44 1019 66 2029 32 3039 53 4049 35 5059 31 6069 23 7079 13 8089 2 50. Fuel Economy The city mileage (in miles per gallon) for 24 family sedans Mileage (in miles per gallon) Frequency 22 27 16 2833 2 34739 2 4045 3