Continuing with the DataNet forecasting problems, develop a double exponential smoothing model using

Continuing with the DataNet forecasting problems, develop a
double exponential smoothing model using smoothing constants a = 0.20 and b =
0.20. As starting values, use the least squares trend line slope and intercept
values.

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a. Compute the MAD for this model.

b. Plot the forecast values against the actual data.

c. Compare this with a linear trend model. Which forecast
method would you use? Explain your rationale.

d. Use the same starting values but try different smoothing
constants 3say, 1a, b2 = 10.10, 0.302, 10.15, 0.252, and 10.30, 0.1024 in an
effort to reduce the MAD value. Prepare a short report that summarizes your
efforts.

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