Question: The following data describe U S manufacturers shipments of general aviation

The following data describe U.S. manufacturers’ shipments of general aviation jet aircraft from 1989 through 2008.
a. Construct a graph of the time series. Does the overall trend appear to be upward or downward?
b. Determine the three-year and five-year centered moving average curves and superimpose each on the original time series.

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  • CreatedSeptember 08, 2015
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