Question: Using the time series shown in Problem 16.24, answer the following questions: a. Forecast the demand for each quarter in Year 4 using seasonal dummy

Using the time series shown in Problem 16.24, answer the following questions:

a. Forecast the demand for each quarter in Year 4 using seasonal dummy variables and a best subsets regression.

b. Interpret the meaning of the coefficients for the seasonal dummy variables.

c. Calculate the MAD for this forecast.

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