The R Project SVN R-packages

\name{WaferTypes}
\alias{WaferTypes}
\title{Data on different types of silicon wafers}
\description{
    The \code{WaferTypes} data frame has 144 rows and 8 columns.
}
\format{
    This data frame contains the following columns:
    \describe{
    \item{Group}{
        a factor with levels \code{1} to \code{4}
    }
    \item{Temperature}{
        an ordered factor with levels
        \code{900} < \code{1000} < \code{1100}
    }
    \item{Type}{
        a factor with levels \code{A} and \code{B} 
    }
    \item{Wafer}{
        a numeric vector
    }
    \item{Site}{
        a numeric vector
    }
    \item{delta}{
        a numeric vector
    }
    \item{Thick}{
        a numeric vector
    }
    \item{uWafer}{
        an ordered factor giving a unique code to each group,
        temperature, type and wafer combination.
    }
    }
}
%\details{}
\source{
    Littel, R. C., Milliken, G. A., Stroup, W. W., and Wolfinger,
    R. D. (1996), \emph{SAS System for Mixed Models}, SAS Institute
    (Data Set 5.8).
}
\examples{
str(WaferTypes)
}
\keyword{datasets}