Handy, Inc., produces a solar-powered electronic calculator that has experiencedthe following monthly sales history for the first four months of the year, inthousands of units:January 23.3 March 30.3February 72.3 April 15.5a. If the forecast for January was 25, determine the one-step-ahead forecasts forFebruary through May using exponential smoothing with a smoothing constant of a=.15.b. Repeat the calculation in part (a) for a value of a= .40. What difference in theforecasts do you observe?c. Compute the MSEs for the forecasts you obtained in parts (a) and (b) forFebruary through April. Which value of a gave more accurate forecasts, basedon the MSE?
Handy, Inc., produces a solar-powered electronic calculator that has experiencedthe following monthly sales history for the first four months of the year, inthousands of units:January 23.3 March 30.3February 72.3 April 15.5a. If the forecast for January was 25, determine the one-step-ahead forecasts forFebruary through May using exponential smoothing with a smoothing constant of a=.15.b. Repeat the calculation in part (a) for a value of a= .40. What difference in theforecasts do you observe?c. Compute the MSEs for the forecasts you obtained in parts (a) and (b) forFebruary through April. Which value of a gave more accurate forecasts, basedon the MSE?
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Handy, Inc., produces a solar-powered electronic calculator that has experienced
the following monthly sales history for the first four months of the year, in
thousands of units:
January 23.3 March 30.3
February 72.3 April 15.5
a. If the
February through May using exponential smoothing with a smoothing constant of a=.15.
b. Repeat the calculation in part (a) for a value of a= .40. What difference in the
forecasts do you observe?
c. Compute the MSEs for the forecasts you obtained in parts (a) and (b) for
February through April. Which value of a gave more accurate forecasts, based
on the MSE?
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