National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows:
Month Sales
(000)Units
Feb. 12
Mar. 15
Apr. 9
May. 17
Jun. 19
Jul. 20
Aug. 24
a. Forecast September sales volume using each of the following:
(1) The naive approach.
(2) A five-month moving average. (Round your answer to 2 decimal places.)
(3) A weighted average using 0.70 for August, 0.10 for July, and 0.20 for June. (Round your answer to 2 decimal places.)
(4) Exponential smoothing with a smoothing constant equal to 0.10, assuming a March forecast of 14(000). (Round your intermediate forecast values and final answer to 2 decimal places.)
(5) A linear trend equation. (Round your intermediate calculations and final answer to 2 decimal places.)"