Mathematics, 17.12.2019 00:31 adrianna74
2. the ols estimators of the coefficients in multiple regression will have omitted variable bias a) if and only if the omitted variable is not mean zero. b) if and only if the omitted variable has a positive coefficient. c) always. d) if and only if the omitted variable is a determinant of y and is correlated with at least one of the regressors.
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