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Data set used in some of OpenMx's examples.
data("nuclear_twin_design_data")
A data frame with 1743 observations on the following variables.
Twin1
Twin2
Father
Mother
zyg
Zygosity of the twin pair
This is a wide format data set. A single variable has values for different member of the same nuclear family.
The OpenMx User's guide can be found at https://openmx.ssri.psu.edu/documentation/.
data(nuclear_twin_design_data) cor(nuclear_twin_design_data[,-5], use="pairwise.complete.obs")
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