Construct a graph of the time series

Reference no: EM131409624

The following data show residential and commercial natural gas consumption (quadrillion Btu) from 1985 through 2000.

1119_Tab 07.jpg

a. Construct a graph of the time series, then superimpose a three-year centered moving average over the original series.

b. Superimpose a five-year centered moving average over the original series. Why is the moving average "smoother" when N = 5?

Reference no: EM131409624

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