Constructing a frequency distribution and a relative frequency histogram.

In the exercise construct a frequency distribution and a relative frequency histogram for the data set using five class. Which class has the greatest relative frequency, and which has the least relative frequency.

Gasoline Consumption:

Data set: Highway fuel consumption (in miles Per gallon) for a sample of cars:

32, 35, 28, 40, 30, 42, 55, 40, 45, 24,

28, 34, 40, 36, 34, 40, 30, 25, 28, 32

20, 35, 25, 44, 26, 39, 38, 42, 45, 32