https://github.com/cran/MASS
Tip revision: 5291de89ef25723803689deae525c7d8c5368372 authored by Brian Ripley on 31 July 2009, 00:00:00 UTC
version 7.3-1
version 7.3-1
Tip revision: 5291de8
genotype.Rd
% file MASS/man/genotype.Rd
% copyright (C) 1994-9 W. N. Venables and B. D. Ripley
%
\name{genotype}
\alias{genotype}
\title{
Rat Genotype Data
}
\description{
Data from a foster feeding experiment with rat mothers and litters of
four different genotypes: \code{A}, \code{B}, \code{I} and \code{J}.
Rat litters were separated from their natural mothers at birth and
given to foster mothers to rear.
}
\usage{
genotype
}
\format{
The data frame has the following components:
\describe{
\item{\code{Litter}}{
genotype of the litter.
}
\item{\code{Mother}}{
genotype of the foster mother.
}
\item{\code{Wt}}{
Litter average weight gain of the litter, in grams at age 28 days.
(The source states that the within-litter variability is negligible.)
}
}
}
\source{
Scheffe, H. (1959) \emph{The Analysis of Variance} Wiley p. 140.
Bailey, D. W. (1953)
\emph{The Inheritance of Maternal Influences on the Growth of the Rat.}
Unpublished Ph.D. thesis, University of California. Table B of the Appendix.
}
\references{
Venables, W. N. and Ripley, B. D. (1999)
\emph{Modern Applied Statistics with S-PLUS.} Third
Edition. Springer.
}
\keyword{datasets}