\HeaderA{Cars93}{Data from 93 Cars on Sale in the USA in 1993}{Cars93}
\keyword{datasets}{Cars93}
\begin{Description}\relax
The \code{Cars93} data frame has 93 rows and 27 columns.
\end{Description}
\begin{Usage}
\begin{verbatim}
Cars93
\end{verbatim}
\end{Usage}
\begin{Format}\relax
This data frame contains the following columns:
\describe{
\item[\code{Manufacturer}] Manufacturer.

\item[\code{Model}] Model.

\item[\code{Type}] Type: a factor with levels \code{"Small"}, \code{"Sporty"},
\code{"Compact"}, \code{"Midsize"}, \code{"Large"} and \code{"Van"}.

\item[\code{Min.Price}] Minimum Price (in \$1,000): price for a basic version.

\item[\code{Price}] Midrange Price (in \$1,000): average of \code{Min.Price} and
\code{Max.Price}.

\item[\code{Max.Price}] Maximum Price (in \$1,000): price for \dQuote{a premium version}.

\item[\code{MPG.city}] City MPG (miles per US gallon by EPA rating).

\item[\code{MPG.highway}] Highway MPG.

\item[\code{AirBags}] Air Bags standard. Factor: none, driver only, or driver \& passenger.

\item[\code{DriveTrain}] Drive train type: rear wheel, front wheel or 4WD; (factor).

\item[\code{Cylinders}] Number of cylinders (missing for Mazda RX-7, which has a rotary engine).

\item[\code{EngineSize}] Engine size (litres).

\item[\code{Horsepower}] Horsepower (maximum).

\item[\code{RPM}] RPM (revs per minute at maximum horsepower).

\item[\code{Rev.per.mile}] Engine revolutions per mile (in highest gear).

\item[\code{Man.trans.avail}] Is a manual transmission version available? (yes or no, Factor).

\item[\code{Fuel.tank.capacity}] Fuel tank capacity (US gallons).

\item[\code{Passengers}] Passenger capacity (persons)

\item[\code{Length}] Length (inches).

\item[\code{Wheelbase}] Wheelbase (inches).

\item[\code{Width}] Width (inches).

\item[\code{Turn.circle}] U-turn space (feet).

\item[\code{Rear.seat.room}] Rear seat room (inches) (missing for 2-seater vehicles).

\item[\code{Luggage.room}] Luggage capacity (cubic feet) (missing for vans).

\item[\code{Weight}] Weight (pounds).

\item[\code{Origin}] Of non-USA or USA company origins? (factor).

\item[\code{Make}] Combination of Manufacturer and Model (character).

}
\end{Format}
\begin{Details}\relax
Cars were selected at random from among 1993 passenger car models that
were listed in both the \emph{Consumer Reports} issue and the
\emph{PACE Buying Guide}.  Pickup trucks and Sport/Utility vehicles were
eliminated due to incomplete information in the \emph{Consumer Reports}
source.  Duplicate models (e.g., Dodge Shadow and Plymouth Sundance)
were listed at most once.

Further description can be found in Lock (1993).
\end{Details}
\begin{Source}\relax
Lock, R. H. (1993)
1993 New Car Data.
\emph{Journal of Statistics Education}
\bold{1}(1).
\url{http://www.amstat.org/publications/jse/v1n1/datasets.lock.html}.
\end{Source}
\begin{References}\relax
Venables, W. N. and Ripley, B. D. (1999)
\emph{Modern Applied Statistics with S-PLUS.} Third
Edition. Springer.
\end{References}

