Takes simulation parameter arguments and returns simulated data.
data_reg_nested3(Xmat, Zmat, Zmat3, beta, rand_eff, rand_eff3, k, n, p, err)
A matrix of covariates.
Design matrix for random effects.
Design matrix for level 3 random effects.
A vector of regression parameters.
A vector of random effects, must be stacked.
A vector of level 3 random effects, must be stacked.
Number of third level clusters.
Number of clusters.
Number of units within each cluster.
A vector of within cluster errors.