\name{ex11.57}
\alias{ex11.57}
\docType{data}
\title{data from exercise 11.57}
\description{
The \code{ex11.57} data frame has 54 rows and 4 columns.
}
\format{
This data frame contains the following columns:
\describe{
\item{permeability}{
a numeric vector
}
\item{Pressure}{
a numeric vector
}
\item{Temp}{
a numeric vector
}
\item{Fabric}{
a factor with levels
\code{420-D} 
\code{630-D} 
\code{840-D} 
}
}
}
\details{
}
\source{
  Devore, J. L. (2003) \emph{Probability and Statistics for Engineering and the Sciences (6th ed)}, Duxbury
}
\examples{
data(ex11.57)
}
\keyword{datasets}