The Quick Change Oil Company has a number of outlets. The numbers of oil changes at the Oak Street outlet in the past 20 days are as follows:

69, 32, 49, 51, 58, 53, 73, 35, 88, 85, 80, 60, 87, 48, 55, 46, 82, 81, 64, 71

The data are to be organized into a frequency distribution using 5 classes.

A.) what class interval would you suggest?

d.) Organize the information into a frequency distribution and determine the relative frequency distribution.

e.) Comment on the shape of the distribution.(Enter the intervals in ascending order.)

The greatest concentration is in classes?up toand? up to ?.