Suppose the variable x2 has been omitted from the following regression equation,
is the estimator obtained when 
is omitted from the equation. The bias in ![]()
src="@@PLUGINFILE@@/ppg__cognero__Ch_03_Multiple_Regression_Analysis_Estimation__media__ddae12c2-50b6-42a4-958e-bb0de3e683a2.PNG" style="vertical-align:-8px;" height="19px" width="16px" /> is positive if _____.
A. 
>0 and 
and 
are positively correlated
B. 
<0 and 
and 
are positively correlated
C. 
>0 and 
and 
are negatively correlated
D. 
= 0 and 
and 
are negatively correlated
Answer: A
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