Question: Styles Paragraph For problems 7 through 90. Use the following time series data: series dota: PERIOD DEMAND 221 247 230 240 156 167 7. (')

Styles Paragraph For problems 7 through 90. Use the following time series data: series dota: PERIOD DEMAND 221 247 230 240 156 167 7. (') Develop a last period forecast for periods 2 through 11. Calculate the MFE, MAD, and MAPE values for periods 2 through 10. Is this a good model? Why? 8. (") Develop a three period weighted moving average forecast for periods 4 through 11. Use weights of 0.4, 0.35, and 0.3, with the most recent observation weighted the highest. Calculate the MFE, MAD, and MAPE values for periods 4 through 10. How do your results compare with those for problem 70? 9. Develop two exponential smoothing forecasts for periods 2 through 11. For the first forecast use a = 0.2. For the second, use 0.7. Assume that your forecast for period 1 was 250. Plot the results. Which model appears to work better? Why? Show working

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