\docType{data}
\name{mpg}
\alias{mpg}
\title{Fuel economy data from 1999 and 2008 for 38 popular models of car}
\format{A data frame with 234 rows and 11 variables}
\description{
  This dataset contains a subset of the fuel economy data
  that the EPA makes available on
  \url{http://fueleconomy.gov}.  It contains only models
  which had a new release every year between 1999 and 2008
  - this was used as a proxy for the popularity of the car.
}
\details{
  \itemize{ \item manufacturer.  \item model.  \item displ.
  engine displacement, in litres \item year.  \item cyl.
  number of cylinders \item trans. type of transmission
  \item drv. f = front-wheel drive, r = rear wheel drive, 4
  = 4wd \item cty. city miles per gallon \item hwy. highway
  miles per gallon \item fl.  \item class. }
}
\keyword{datasets}

