Contemporary Mathematics for Business & Consumers 8th Edition by Robert Brechner,Geroge Bergeman

تمرين 33

You are the owner of the Internet Cafe. As part of a marketing effort to increase the "average sale" per customer, you recently did a survey of the lunch-hour sales receipts for a busy Saturday. Following are the results of that survey.

a. Group the sales receipts into six classes of equal size ($4.00-$4.99, $5.00-$5.99, etc.) and construct a frequency distribution.
b. Calculate the mean of the grouped data.
c. Using the grid provided below, prepare a histogram of the sales receipts.