The following data represent the highway fuel consumptions (in miles per gallon) for a sample of cars. Fuel Consumption (in mpg):
34 43 27 29 27 43
28 29 21 41 32 23
43 37 28 23 24 39
20 20 35 28 42 37
32 42 33 40 38 43
Construct a frequency distribution for the data using five classes.