The following time series shows the sales of a particular product over the past 6 months.   Time (months) Sales (Y) E F 1 105     2 135     3 120     4 105     5 90     6 120     7       8         Use w = 0.3 to compute the exponential smoothing values for the time series. What is the forecast for the next two months? Graph initial and smoothed time series. Does your forecast seem to be reasonable? Explain your answer.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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The following time series shows the sales of a particular product over the past 6 months.

 

Time (months)

Sales (Y)

E

F

1

105

 

 

2

135

 

 

3

120

 

 

4

105

 

 

5

90

 

 

6

120

 

 

7

 

 

 

8

 

 

 

 

  1. Use w = 0.3 to compute the exponential smoothing values for the time series.
  2. What is the forecast for the next two months?
  3. Graph initial and smoothed time series.
  4. Does your forecast seem to be reasonable? Explain your answer.
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Follow-up Question
  1. You gave a forecast only for 1 month !!! Based on the task 2 month needed
  2. Graph initial and smoothed time series.
  3. Does your forecast seem to be reasonable? Explain your answer.
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