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1 National Scan, Inc sells radio frequency inventory tags

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1 National Scan, Inc sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows Month Sales (000 units) Feb. 21 Mar. 20 Apr. 17 May 22 Jun. 20 Jul. 24 Aug. 22 a. Plot the monthly data on a sheet of graph paper b. Forecast September sales volume using each of the following: (1) The naive approach (2) A five month moving average (3) A weighted average using.60 for August, .30 for July, and.10 for June (4) Exponential smoothing with a smoothing constant equal to .20, assuming a a March -forecast of 19(000) (5) A linear trend equation Which method seems least appropriate? Why? (Hint: Refer to your plot from part a.) What does use of the term sales rather than demand presume? c. d.