mpg – Miles per gallon
cyl – Number of cylinders
disp – Displacement
hp – Gross horsepower
drat – Rear axle ratio
wt – Weight (1000 lbs)
qsec – 1/4 mile time (seconds)
vs – Engine type
am – Transmission
gear – Number of forward gears
carb – Number of carburetors
\[ mpg = \frac{miles\ traveled}{gallons\ of\ gas} \]