\Header{chickwts}{Chicken Weights by Feed Type}
\keyword{datasets}{chickwts}
\begin{Description}\relax
An experiment was conducted to measure and compare the effectiveness
of various feed supplements on the growth rate of chickens.\end{Description}
\begin{Usage}
\begin{verbatim}data(chickwts)\end{verbatim}
\end{Usage}
\begin{Format}\relax
A data frame with 71 observations on 2 variables.
\describe{
\item[weight:] a numeric variable giving the chick weight.
\item[feed:] a factor giving the feed type.
}\end{Format}
\begin{Details}\relax
Newly hatched chicks were randomly allocated into six groups, and each
group was given a different feed supplement.  Their weights in grams
after six weeks are given along with feed types.\end{Details}
\begin{Source}\relax
Anonymous (1948) \emph{Biometrika}, \bold{35}, p.214.\end{Source}
\begin{References}\relax
McNeil, D. R. (1977) \emph{Interactive Data Analysis.}  New York:
Wiley.\end{References}

