Data set used in some of OpenMx's examples.
data("example2")
A data frame with 800 observations on the following variables.
IDNum
ID number
TwinNum
Twin ID number
Zygosity
Zygosity of the twin
X
X variable for twins 1 and 2
Y
Y variable for twins 1 and 2
Same as example1 but in tall format instead of wide.
The OpenMx User's guide can be found at https://openmx.ssri.psu.edu/documentation.
data(example2) plot(Y ~ X, data = example2)
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