\name{tobin}
\alias{tobin}
\docType{data}
\title{Tobin's Tobit data}
\description{
Economists fit a parametric censored data model called the
`tobit'. These data are from Tobin's original paper.
}
\usage{data(tobin)}
\format{
  A data frame with 20 observations on the following 3 variables.
  \describe{
    \item{durable}{Durable goods purchase}
    \item{age}{Age in years}
    \item{quant}{Liquidity ratio (x 1000)}
  }
}

\source{
J. Tobin, Estimation of relationships for limited dependent variables, Econometrica, v26, 24-36, 1958.
}
\examples{
tfit <- survreg(Surv(durable, durable>0, type='left') ~age + quant,
                data=tobin, dist='gaussian')

predict(tfit,type="response")

}
\keyword{datasets}
