Question: Let β1DM denote the entity-demeaned estimator given in Equation (10.22), and let β1BA denote the before and after estimator without an intercept, so that Show

Let β1DM denote the entity-demeaned estimator given in Equation (10.22), and let β1BA denote the "before and after" estimator without an intercept, so that

Let β1DM denote the entity-demeaned estimator given in Equation (10.22),

Show that, if

Let β1DM denote the entity-demeaned estimator given in Equation (10.22),
Let β1DM denote the entity-demeaned estimator given in Equation (10.22),

and 422

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