A new method for obtaining explicit estimators in unbalanced mixed linear models

The general unbalanced mixed linear model with two variance components is considered. Through resampling it is demonstrated how the fixed effects can be estimated explicitly. It is shown that the obtained nonlinear estimator is unbiased and its variance is also derived. A condition is given when the proposed estimator is recommended instead of the ordinary least squares estimator.Funding Agencies|Swedish Foundation for Humanities and Social sciences [P14-0641:1]