a. Calculate the single exponential smoothing forecast for these data using an α of 0.30 and an initial forecast ( F1�1 ) of 31. Note: Round your intermediate calculations and answers to 2 decimal places.   b. Calculate the exponential smoothing with trend forecast for these data using an α of 0.30, a δ of 0.30, an initial trend forecast ( T1�1 ) of 1, and an initial exponentially smoothed forecast ( F1�1 ) of 30. Note: Round your intermediate calculations and answers to 2 decimal places.   c-1. Calculate the mean absolute deviation (MAD) for the last nine months of forecasts. Note: Round your intermediate calculations and answers to 2 decimal places.   c-2. Which is best? multiple choice Exponential smoothing with trend forecast Single exponential smoothing forecast

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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The following table contains the demand from the last 10 months:

MONTH ACTUAL DEMAND
1 31
2 34
3 33
4 35
5 37
6 36
7 38
8 40
9 40
10 41

a. Calculate the single exponential smoothing forecast for these data using an α of 0.30 and an initial forecast ( F1�1 ) of 31.

Note: Round your intermediate calculations and answers to 2 decimal places.

 

b. Calculate the exponential smoothing with trend forecast for these data using an α of 0.30, a δ of 0.30, an initial trend forecast ( T1�1 ) of 1, and an initial exponentially smoothed forecast ( F1�1 ) of 30.

Note: Round your intermediate calculations and answers to 2 decimal places.

 

c-1. Calculate the mean absolute deviation (MAD) for the last nine months of forecasts.

Note: Round your intermediate calculations and answers to 2 decimal places.

 

c-2. Which is best?

multiple choice

  • Exponential smoothing with trend forecast
  • Single exponential smoothing forecast
 
 
 
 
 
 
 
 
 
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