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:

$\backslash$table$[[55,38,52,32,73,51,72,61,55,36],[46,57,40,70,64,77,67,40,71,79]]$

The data are to be organized into a frequency distribution.

a$.$ How many classes would you recommend?

b$.$ What class interval would you suggest? $($Round up the final answer to the nearest whole number.$)$

c$.$ What lower limit would you recommend for the first class?

d$.$ Organize the information into a frequency distribution and determine the relative frequency distribution. $($Round the "Relative frequency" answers to $2$ decimal places.$)$

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

The largest concentration is in ciasses to under and to under