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Forecast January sales using each of the following: A 4-month moving average. Exponential smoothing using an alpha = 0.25 Which of the forecast models is

Forecast January sales using each of the following:

  1. A 4-month moving average.
  2. Exponential smoothing using an alpha = 0.25
  3. Which of the forecast models is better and why?
  4. Using the tracking signal with a control limit of + to show if the exponential smoothing model of b) is in control. Discuss your result.

Please make sure question 4 is answered! I really don't understand. Please also show excel formulas.

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