[Solution Library] (a) Plot the data on U.S. general aviation shipments. (b) Describe the pattern and discuss possible causes. (c) Would a fitted trend
Question: (a) Plot the data on U.S. general aviation shipments. (b) Describe the pattern and discuss possible causes. (c) Would a fitted trend be helpful? Explain. (d) Make a similar graph for 1992-2003 only. Would a fitted trend be helpful in making a prediction for 2004? (e) Fit a trend model of your choice to the 1992-2003 data. (f) Make a forecast for 2004 , using either the fitted trend model or a judgment forecast. Why is it best to ignore earlier years in this data set?
Airplanes
U.S. Manufactured General Aviation Shipments, 1966-2003
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