Question: Sales of industrial vacuum cleaners at Overholt Supply Co. over the past 13 months were as follows:
(a) Using a moving average with three periods, determine the demand for vacuum cleaners for next February.
(b) Using a three-period weighted moving average with weights 3, 2, and 1 13 = most recent2, determine the demand for vacuum cleaners for February.
(c) Evaluate and comment on the accuracy of each of these models.