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\name{delivery}
\alias{delivery}
\docType{data}
\title{Delivery Time Data}
\description{
Delivery Time Data, from Montgomery and Peck (1982).
The aim is to explain the time required to service a vending
machine (Y) by means of the number of products stocked (X1) and the
distance walked by the route driver (X2).
}
\usage{data(delivery, package="robustbase")}
\format{
A data frame with 25 observations on the following 3 variables.
\describe{
\item{\code{n.prod}}{Number of Products}
\item{\code{distance}}{Distance}
\item{\code{delTime}}{Delivery time}
}
}
\source{
Montgomery and Peck (1982, p.116)
}
\references{
P. J. Rousseeuw and A. M. Leroy (1987)
\emph{Robust Regression and Outlier Detection};
Wiley, page 155, table 23.
}
\examples{
data(delivery)
summary(lm.deli <- lm(delTime ~ ., data = delivery))
delivery.x <- as.matrix(delivery[, 1:2])
c_deli <- covMcd(delivery.x)
c_deli
}
\keyword{datasets}
|
