List of variables:Year = calendar year
Q = natural log of per capita consumption of spiritsi
Inc = natural log of real per capita income
P = natural log of the relative price of spirits = ln(Price of spirits / price index)
Source: J. Durbin and G.S. Watson, "Testing for Serial Correlation in Least Squares Regression, II," Biometrika, vol. 38. pp. 159-78.
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