The Two Feasible Seemingly Unrelated Regression Estimator

ABSTRACT This paper presents the review for the Seemingly Unrelated Regression Equation SUR or system model involved several individual relationships that related by their disturbances terms are correlated. This model appears in the beginning of the sixties of the last century initially introduced by Zellner 1962 1963 and followed many author .the model has been applied in many fields such as econometric analysis of economic phenomenon such as investment income consumption demand functions. We review comprehensively the estimators for SUR equation models whereas there are many author write about this model and some properties of the estimators.