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The closing value of the AMEX Airline Index for each

The closing value of the AMEX Airline Index for each trading day during a one-year period is given in the file P12_17.xlsx.

a. How well does the moving average method track this series when the span is 4; when the span is 12?

b. Using the more appropriate span, forecast the closing value of this index on the next trading day with the moving average method.

a. How well does the moving average method track this series when the span is 4; when the span is 12?

b. Using the more appropriate span, forecast the closing value of this index on the next trading day with the moving average method.

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