Question: Although you should not expect a perfectly fitting model for any time-series data, you can consider the first differences, second differences, and percentage differences for

Although you should not expect a perfectly fitting model for any time-series data, you can consider the first differences, second differences, and percentage differences for a given series as guides in choosing an appropriate model.
Although you should not expect a perfectly fitting model for
For this problem, use each of the time series presented in the table in the left column and stored in TSmodel1:
a. Determine the most appropriate model.
b. Compute the forecasting equation.
c. Forecast the value for 2012.

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