\Header{rivers}{Lengths of Major North American Rivers}
\keyword{datasets}{rivers}
\begin{Usage}
\begin{verbatim}data(rivers)\end{verbatim}
\end{Usage}
\begin{Format}
A vector containing 141 observations.\end{Format}
\begin{Description}
This data set gives the lengths  (in miles) of 141 "major" rivers
in North America, as compiled by the US Geological Survey.\end{Description}
\begin{Source}
World Almanac and Book of Facts, 1975, page 406.\end{Source}
\begin{References}
McNeil, D. (1977).  Interactive Data Analysis.  New York: Wiley.\end{References}

