# A fuel consumption study of Stata's auto dataset
We conduct a study of the fuel consumption of cars in Stata's auto dataset.
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sysuse auto, clear
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We generate a variable, **fuel**, that measures the fuel consumption rate in the unit of
Gallons per 100 Miles.
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generate fuel = 100/mpg
label variable fuel "Fuel consumption (Gallons per 100 Miles)"
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## Explore relationship between fuel consumption and vehicle weight
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scatter fuel weight, mcolor(blue%50)
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regress fuel weight
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matrix eb = e(b)
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The regression shows that for every unit increase in weight, a
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