Observed weekly sales of screwdrivers at city hardware store over 8 weeks period have been 20, 15, 35, 30, 40, 20, 25 and 30.
Determine the one step ahead forecast for weeks 4 through 8, assuming that the three week moving averages are used to forecast the sale
Find the exponential smoothing forecast for weeks 4 through 8. Suppose that exponential smoothing constant α is 0.15. To get the method starting, use the same forecast for week 4 as used in part a.
Based on the MAD, which method did better?
What is the exponential smoothing forecast made at the end of week 6 for the sales in week 12?