pearson.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 30 行

\name{pearson}
\alias{pearson}
\title{Karl Pearson's Crab Data}
\usage{data(pearson)}
\description{
The data give the ratio of "forehead" breadth to body length 
for 1000 crabs sampled at Naples by Professor W.F.R. Weldon.

The \code{pearson} data frame has 29 rows and 2 columns.
}
\format{
  This data frame contains the following columns:
  \describe{
    \item{ratio}{the boundaries of grouping intervals.}
    \item{freq}{the frequencies of observation falling into each interval.}
  }
}
\source{
    Pearson, K. (1894). \emph{Contributions to the mathematical theory of evolution.} 
    Phil. Trans. Roy. Soc. London A 185, 71-110.
}
\references{
   \url{http://www.math.mcmaster.ca/peter/mix/demex/excrabs.html}
}
\examples{
data(pearson)
plot.mixdata(pearson)
}
\keyword{datasets}