Question: After plotting the following demand data, a manager has concluded that a trend-adjusted exponential smoothing model is appropriate to predict future demand. Use period I

After plotting the following demand data, a manager has concluded that a trend-adjusted exponential smoothing model is appropriate to predict future demand. Use period I to 4 to estimate the initial smootired series (use the average of the first four periods) and smoothed trend (use the increase from day I today 4 divided by 3). Use a = .5 and [3 = .4 to develop forecasts for periods 5 through 10.
Period, t A, Actual
1……………………….210
2……………………….224
3……………………….229
4……………………….240
5……………………….255
6……………………….265
7……………………….272
6……………………….265
9……………………….294
10

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