The German University in Cairo (GUC) Spring 2012 Faculty of Management Technology Dr. Sherwat Elwan Operations Management Department OPER602 2. National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows: a. Plot the monthly data on a sheet of graph paper. b. Forecast September sales volume using each of the following: 1. A five-month moving average. 2. Exponential smoothing with a smoothing constant equal to .20, assuming a March forecast of 19(000). 3. The naive approach. 4. A weighted average using .60 for August, .30 for July, and .10 for June.
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Weighted mean, Time series analysis, German University in Cairo