Given the following data, use exponential smoothing with a = 0.3and ? =.5 to develop a demand forecasts for period7. Assume that the forecast for week 1= 19. Use the MeanAbsolute Percent Error to determine which forecasts are moreaccurate.
Period | 1 | 2 | 3 | 4 | 5 | 6 |
Demand | 17 | 19 | 15 | 19 | 13 | 18 |