The file P14_28.xlsx contains monthly retail sales of U.S. liquor stores. a. Is seasonality present in these
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The file P14_28.xlsx contains monthly retail sales of U.S. liquor stores.
a. Is seasonality present in these data? If so, characterize the seasonality pattern.
b. Use Winters’ method to forecast this series with smoothing constants α = β = 0.1 and γ = 0.3. Does the forecast series seem to track the seasonal pattern well? What are your forecasts for the next 12 months?
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a To determine if seasonality is present in the data a seasonal decomposition of time series S...View the full answer
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Related Book For
Practical Management Science
ISBN: 978-1305250901
5th edition
Authors: Wayne L. Winston, Christian Albright
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