Tuesday, June 21, 2011

CHAPTER 18: SIMULTANEOUS-EQUATION MODELS

ü  The Nature of Simultaneous-Equation Models
1.      In contrast, to single-equation models, in simultaneous-equation models more than one dependent, or endogenous, variable is involved, necessitating as many equations as the number of endogenous variables.
2.      A unique feature of simultaneous-equation models is that the endogenous variable in one equation may appear as an explanatory variable in another equation of the system.
3.      As a consequence, such an endogenous explanatory variable becomes stochastic and is usually correlated with the disturbance term of the equation in which it appears as an explanatory variable.


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