pikeraw.rd

来自「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」· RD 代码 · 共 35 行

\name{pikeraw}
\alias{pikeraw}
\title{A Sample of Pike Lengths}
\usage{data(pikeraw)}
\description{
The data give the lengths of 523 pike (Esox lucius), sampled 
in 1965 from Heming Lake, Manitoba, Canada. There are known 
to be five age-groups in the sample. For each fish, the age 
group is determined by scale reading.

The \code{pikeraw} data frame has 523 rows and 2 columns.
}
\format{
  This data frame contains the following columns:
  \describe{
    \item{length}{the lengths of 523 pike}
    \item{age}{the age groups of 523 pike}
  }
}
\source{
    Macdonald, P.D.M. and T.J. Pitcher (1979). 
    \emph{Age-groups from size-frequency data: a versatile and efficient method of analysing distribution mixtures.}
    Journal of the Fisheries Research Board of Canada 36, 987-1001.
}
\references{
    Macdonald, P.D.M. (1987). \emph{Analysis of length-frequency distributions.} 
    In R.C. Summerfelt and G.E. Hall [editors], Age and Growth of Fish, Iowa State University Press, Ames, Iowa. pp 371-384.

    \url{http://www.math.mcmaster.ca/peter/mix/demex/expike.html}
}
\examples{
data(pikeraw)
}
\keyword{datasets}