National Scan, Inc., sells radio frequency inventory tags. Monthly sales for a seven-month period were as follows:
Month Sales (000)Units
Feb. 20
Mar. 18
Apr. 13
May. 26
Jun. 17
Jul. 23
Aug. 21
b. Forecast September sales volume using each of the following:
(1) A linear trend equation.(Round your intermediate calculations and final answer to 2 decimal places.)
Yt thousands
(2) A five-month moving average. (Round your answer to 2 decimal places.)
Moving average thousands
(3) Exponential smoothing with a smoothing constant equal to .10, assuming a March forecast of 15(000). (Round your intermediate forecast values and final answer to 2 decimal places)
Forecast thousands
(4) The naive approach. N
Naive approach thousands
(5) A weighted average using .70 for August, .20 for July, and .10 for June. (Round your answer to 2 decimal places.)
Weighted average thousands