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\name{triplot}
\alias{triplot}
\title{Plot of prior, likelihood and posterior for a proportion}
\description{
For a proportion problem with a beta prior, plots the prior, likelihood and posterior
on one graph.
}
\usage{
triplot(prior,data,where="topright")
}
\arguments{
\item{prior}{vector of parameters for beta prior}
\item{data}{vector consisting of number of successes and number of
failures}
\item{where}{the location of the legend for the plot}
}
\author{Jim Albert}
\examples{
prior=c(3,10) # proportion has a beta(3, 10) prior
data=c(10,6) # observe 10 successes and 6 failures
triplot(prior,data)
}
\keyword{models}
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