7. Sales As customers come to the cash register at an electronics store, the sales associate asks them to give their ZIP code. During one hour, a sales associate
gets the following responses.
43221, 43212, 43026, 43220, 43214, 43026, 43229, 43229, 43220, 45414,
43220, 43221, 43212, 43220, 43212, 43220, 43221, 43221, 43214, 43026
a. Make a line plot showing how many times each ZIP code was recorded.
b. Which ZIP code was recorded most frequently?
c. Why would a store want this type of information?