Section 1

The variables in the mtcars data set are:

  • mpg - The miles/(US) gallon
  • cyl - The number of cylinders
  • disp - Displacement (cu.in)
  • hp - Gross horespower
  • drat - Rear axle ratio
  • wt - Weight (1000lbs)
  • qsec - 1/4 mile time
  • vs - Enginge (0 = V-shaped, 1= straight)
  • am - Transmission (0 = automatic, 1 = manual)
  • gear - Number of forward gears
  • carb - Number of carburetors

Section 2

\[mpg = \frac{miles\traveled}{gallons\of\gas}\]

Section 3