The GNP for each quarter of the past four years is shown in the following table: (a)
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(a) Find the optimal value of a that would minimize MAPE for the exponential smoothing model.
(b) What is the linear trend equation that best fits the data? Forecast the GNP for the first quarter of year 5 by using this equation.
(c) Forecast the GNP for the first quarter of year 5 by using a four-period moving average.
(d) Which of these methods is most appropriate to use? Justify your answer.
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Related Book For 
Managerial Decision Modeling With Spreadsheets
ISBN: 9780136115830
3rd Edition
Authors: Nagraj Balakrishnan, Barry Render, Jr. Ralph M. Stair
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