The U.S. GNP during the years 1975–1984 is given in Table in billions of dollars (file GNP.xls).

The U.S. GNP during the years 1975–1984 is given in Table in billions of dollars (file GNP.xls).

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The U.S. GNP during the years 1975–1984 is given in Table in billions of dollars (file GNP.xls).
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Year

GNP

1975

1,060

1976

1,170

1977

1,305

1978

1,455

1979

1,630

1980

1,800

1981

2,000

1982

2,220

1983

2,450

1984

2,730

a Plot x = years after 1974 against GNP, and use the plot to describe how to fit a curve that could be used to predict GNP during future years.

b When the regression on transformed data is done, we find that  width=. What is the prediction for 1985 GNP?

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