Express Mail Services, Inc. delivers small parcels to residential addresses in the Long Beach, California area. To

Question:

Express Mail Services, Inc. delivers small parcels to residential addresses in the Long Beach, California area. To learn more about the efficiency of a new employee, EMS has collected the following data on the number of deliveries per week for a recent six-week sample:

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 dataseries.