\name{ex15.24} \alias{ex15.24} \title{data from exercise 15.24} \description{ The \code{ex15.24} data frame has 9 rows and 4 columns. } \format{ This data frame contains the following columns: \describe{ \item{X1}{ a numeric vector } \item{X2}{ a numeric vector } \item{X3}{ a numeric vector } \item{X4}{ a numeric vector } } } \details{ } \source{ Devore, J. L. (2000) \emph{Probability and Statistics for Engineering and the Sciences (5th ed)}, Duxbury } \examples{ data(ex15.24) } \keyword{datasets}