2. The OLS estimators of the coefficients in multiple regression will have omittedvariable biasa) if and only if the omitted variable is not mean zero.b) if and only if the omitted variable has a positive coefficient.c) alwaysd) if and only if the omitted variable is a determinant of Y and is correlated with atleast one of the regressors.

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Asked Dec 4, 2019
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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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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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Omitted variable bias:

The bias in the ordinary least square estimator that occurs as a resul...

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