Liu, ShuangzheKing, Maxwell2015-12-132015-12-131025-5834http://hdl.handle.net/1885/72757We first establish two matrix-determinant Kantorovich-type inequalities. Then we introduce two efficiency criteria and make efficiency comparisons between the ordinary least squares estimator and best linear unbiased estimator in linear models.Keywords: Determinant; Efficiency comparisons; General linear model; Matrix differential; Trace20022015-12-11