This function simulates heterogeneity of level one error variance.
simulate_heterogeneity(data, sim_args, ...)Data simulated from other functions to pass to this function. This function needs to be specified after `simulate_fixed` and `simulate_error`.
A named list with special model formula syntax. See details and examples for more information. The named list may contain the following:
fixed: This is the fixed portion of the model (i.e. covariates)
random: This is the random portion of the model (i.e. random effects)
error: This is the error (i.e. residual term).
Other arguments to pass to error simulation functions.