The accompanying data file contains monthly data on housing starts (in 1,000s) in the U.S. For cross-validation,
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The accompanying data file contains monthly data on housing starts (in 1,000s) in the U.S. For cross-validation, let the training and the validation sets comprise the period from Jan-11 to Dec-16 and Jan-17 to Nov-18, respectively.
a. Use the training set to implement the Holt-Winters exponential smoothing method with additive and multiplicative seasonality and compute the resulting MSE, MAD, and MAPE for the validation set.
b. Determine the preferred model and reimplement it with the entire data set to forecast housing starts for December of 2018.
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Analytic Solver Results a b The additive model is preferred becau...View the full answer
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