Question: Question 1: The figure below is a time plot of the seasonally adjusted pre-September 11 Air series. Which of the following smoothing methods would be

Question 1: The figure below is a time plot of the seasonally adjusted pre-September 11 Air series.

Which of the following smoothing methods would be adequate for forecasting this series?

  • Nave forecasts :
  • Moving average (with what window width?) :
  • Simple exponential smoothing :
  • Double exponential smoothing :
  • Holt-Winter's exponential smoothing :

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