Month 1 2 3 7 8 9 10 11 12 Flat-Screen Sales 30 32 30 39 33 34 34 38 36 39 30 36 a) Determine the one-step-ahead flat-screen sales forecasts for the first month of next year using 3- and 5-month moving averages. b) Using a 5-month moving average, determine the one-step-ahead flat-screen forecasts for the 7th through 12th months. Compute the MAD. c) Suppose that exponential smoothing is used with a smoothing constant alpha = 0.1 to forecast flat-screen sales for the 7th through 12th months. d) Based on MAD which method did better? 4.
Month 1 2 3 7 8 9 10 11 12 Flat-Screen Sales 30 32 30 39 33 34 34 38 36 39 30 36 a) Determine the one-step-ahead flat-screen sales forecasts for the first month of next year using 3- and 5-month moving averages. b) Using a 5-month moving average, determine the one-step-ahead flat-screen forecasts for the 7th through 12th months. Compute the MAD. c) Suppose that exponential smoothing is used with a smoothing constant alpha = 0.1 to forecast flat-screen sales for the 7th through 12th months. d) Based on MAD which method did better? 4.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter13: Regression And Forecasting Models
Section13.7: Exponential Smoothing Models
Problem 28P: The file P13_28.xlsx contains monthly retail sales of U.S. liquor stores. a. Is seasonality present...
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