\documentclass[a4paper]{article}
% Taken from the Sweave manual.
\title{ Sweave Example 1}
\author{Friedrich Leisch}
\begin{document}
\maketitle
In this example we embed parts of the examples from the
\texttt{kruskal.test} help page into a \LaTeX{} document :
<<>>=
data(airquality)
kruskal.test(Ozone ~ Month , data=airquality)
@
which shows that the location parameter of the Ozone
distribution varies significantly from month to month . Finally we
include a boxplot of the data:
\begin {center}
<<fig=TRUE, echo=FALSE>>=
boxplot(Ozone ~ Month , data = airquality)
@
\end{center}
\end{document}

