% Generated by roxygen2: do not edit by hand % Please edit documentation in R/data.R \docType{data} \name{mpg} \alias{mpg} \title{Fuel economy data from 1999 to 2008 for 38 popular models of cars} \format{ A data frame with 234 rows and 11 variables: \describe{ \item{manufacturer}{manufacturer name} \item{model}{model name} \item{displ}{engine displacement, in litres} \item{year}{year of manufacture} \item{cyl}{number of cylinders} \item{trans}{type of transmission} \item{drv}{the type of drive train, where f = front-wheel drive, r = rear wheel drive, 4 = 4wd} \item{cty}{city miles per gallon} \item{hwy}{highway miles per gallon} \item{fl}{fuel type} \item{class}{"type" of car} } } \usage{ mpg } \description{ This dataset contains a subset of the fuel economy data that the EPA makes available on \url{https://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. } \keyword{datasets}