normals.rd

这个包里面含有利用极大似然估计方法来拟合成组数据和条件数据的有限混合分布模型的函数

\name{normals}
\alias{normals}
\title{Scale Mixture Data with Three Normal Components}
\usage{data(normals)}
\description{
Scale mixture of three normal distributions.

The \code{normals} data frame has 25 rows and 2 columns.
}
\format{
  This data frame contains the following columns:
  \describe{
    \item{x}{the boundaries of grouping intervals.}
    \item{freq}{the frequencies of observation falling into each interval.}
  }
}
\details{
A total of 249 observations were generated by computer to follow the mixture distribution 
1/3 N(12.5, 1) + 1/3 N(12.5, 3) + 1/3 N(12.5, 5) where N(\emph{m}, \emph{s}) denotes a 
normal distribution with mean \emph{m} and standard deviation \emph{s}.
}
\source{
  \url{http://www.math.mcmaster.ca/peter/mix/demex/exscle.html}
}
\examples{
data(normals)
plot.mixdata(normals)
}
\keyword{datasets}