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The following tabulations are actual sales of units for six months and a starting forecast in January.     ACTUAL FORECAST January 105 80 February 95   March 102   April 85   May 64   June 94       a. Calculate forecasts for the remaining five months using simple exponential smoothing with α = 0.2. b. Calculate the MAD for all the forecasts, including January's.

The following tabulations are actual sales of units for six months and a starting forecast in January.     ACTUAL FORECAST January 105 80 February 95   March 102   April 85   May 64   June 94       a. Calculate forecasts for the remaining five months using simple exponential smoothing with α = 0.2. b. Calculate the MAD for all the forecasts, including January's.

Practical Management Science
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
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The following tabulations are actual sales of units for six months and a starting forecast in January.

 

  ACTUAL FORECAST
January 105 80
February 95  
March 102  
April 85  
May 64  
June 94  
 

 

a. Calculate forecasts for the remaining five months using simple exponential smoothing with α = 0.2.

b. Calculate the MAD for all the forecasts, including January's.

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