National Scan Inc sells radion frequency inventory tags. Monthly sales for 7 month period as follows:
month sales (000)units
feb 20
march 20
april 7
may 22
june 18
july 24
august 30
forecast September sales volume using each of the following: (1)a linear tree equation( round your intermediate calculations and final answer to 2 decimal places)
(2)a five month moving average(round your answer to 2 decimal places )
(3)exponential smoothing with the smoothing constant equal to .20 assuming a march forecast 14(000)(round your intermediate forecast values and final answer to 2 decimal places)
(4) the naive approach
(5) a weighted average using .65 for august .05 for July and 0.30 for June(round your answer to 2 decimal places)
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