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\name{nuclear_twin_design_data}
\alias{nuclear_twin_design_data}
\docType{data}
\title{
Twin data from a nuclear family design
}
\description{
Data set used in some of OpenMx's examples.
}
\usage{data("nuclear_twin_design_data")}
\format{
A data frame with 1743 observations on the following variables.
\describe{
\item{\code{Twin1}}{}
\item{\code{Twin2}}{}
\item{\code{Father}}{}
\item{\code{Mother}}{}
\item{\code{zyg}}{Zygosity of the twin pair}
}
}
\details{
This is a wide format data set. A single variable has values for different member of the same nuclear family.
}
\source{
Likely simulated.
}
\references{
The OpenMx User's guide can be found at \url{https://openmx.ssri.psu.edu/documentation/}.
}
\examples{
data(nuclear_twin_design_data)
cor(nuclear_twin_design_data[,-5], use="pairwise.complete.obs")
}
\keyword{datasets}
|
