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\name{ex11.53}\alias{ex11.53}\title{data from exercise 11.53}\description{The \code{ex11.53} data frame has 8 rows and 6 columns.}\format{This data frame contains the following columns:\describe{\item{Run}{a numeric vector}\item{Spray.Volume}{a factor with levels\code{+}\code{-}}\item{Belt.Speed}{a factor with levels\code{+}\code{-}}\item{Brand}{a factor with levels\code{+}\code{-}}\item{Replication.1}{a numeric vector}\item{Replication.2}{a numeric vector}}}\details{}\source{Devore, J. L. (2000) \emph{Probability and Statistics for Engineering and the Sciences (5th ed)}, Duxbury}\examples{data(ex11.53)}\keyword{datasets}