\name{test.data}
\alias{test.data}
\docType{data}
\title{
%%   ~~ data name/kind ... ~~
}
\description{
%%  ~~ A concise (1-5 lines) description of the dataset. ~~
}
\usage{data(test.data)}
\format{
  A data frame with 100 observations on the following 3 variables.
  \describe{
    \item{\code{Y}}{a numeric vector}
    \item{\code{X1}}{a numeric vector}
    \item{\code{X2}}{a numeric vector}
  }
}
\details{
%%  ~~ If necessary, more details than the __description__ above ~~
}
\source{
%%  ~~ reference to a publication or URL from which the data were obtained ~~
}
\references{
%%  ~~ possibly secondary sources and usages ~~
}
\examples{
data(test.data)
## maybe str(test.data) ; plot(test.data) ...
}
\keyword{datasets}