Abstract
For the simple linear functional relationship model with replication, the asymptotic properties of the ordinary (OLS) and grouping least squares (GRLS) estimator of the slope are investi- gated under the assumption of normally distributed errors with unknown covariance matrix. The relative performance of the OLS and GRLS estimator is compared in terms of the asymptotic mean square error, and a set of critical parameters are identified for determining the dominance of one estimator over the other. It is also shown that the GRLS estimator is asymptoticallyequivalent to the maximum likelihood (ML) estimator under the given assumptions.
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