# Question

The file Natural Gas contains the monthly average wellhead and residential prices for natural gas (dollars per thousand cubic feet) in the United States from January 1, 2008, to January 1, 2013. (Data extracted from “U. S. Natural Gas Prices,”1. usa. gov/ qHDWNz, March 1, 2013.) For the wellhead price and the residential price:

a. Construct a time series plot.

b. What pattern, if any, is present in the data?

c. Construct a scatter plot of the wellhead price and the residential price.

d. What conclusion can you reach about the relationship between the wellhead price and the residential price?

a. Construct a time series plot.

b. What pattern, if any, is present in the data?

c. Construct a scatter plot of the wellhead price and the residential price.

d. What conclusion can you reach about the relationship between the wellhead price and the residential price?

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