The following data describe U.S. manufacturers shipments of general aviation jet aircraft from 1989 through 2008. a.
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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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a The overall trend is upward b The time series and the two centered ...View the full answer
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