Refer to the Lincolnville School District bus data. Select the variables referring the number of miles, travelled since the last maintenance, and organize these data into a frequency distribution.

a. What is a typical amount of miles traveled? What is the range?

b. Comment on the shape of the distribution. Are there any outliers in terms miles driven?

c. Draw a cumulative relative frequency distribution. Forty percent of the buses were driven fewer than how many miles? How many buses were driven less than 10,500 miles?

d. Refer to the variables regarding the bus manufacturer and the bus capacity. Draw a pie chart of each variable and give a description of the results