Data Description.  Universal Package Service, Ltd., delivers small parcels to business addresses in the Greater Boston area. To learn more about the demand for its service, UPS has collected the following data on the number of deliveries per week for a sample of ten customers:

                                                 3    3    4   2    4    2    3    3    23    3

A. Calculate the mean, median, and mode measures of central tendency for the number of deliveries per week. Which measure does the best job of describing central tendency for this variable?

B. Calculate the range, variance, and standard deviation for this data series. Which measure does the best job of describing the dispersion in this variable?