If the omitted variable is negatively correlated with the treatment (x1,x2)<0 and has a positive impact on the outcome(b2>0), then the effect of b1 is overestimated or underestimated?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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If the omitted variable is negatively correlated
with the treatment (x1,x2)<0 and has a
positive impact on the outcome(b2>0), then
the effect of b1 is overestimated or
underestimated?
Transcribed Image Text:If the omitted variable is negatively correlated with the treatment (x1,x2)<0 and has a positive impact on the outcome(b2>0), then the effect of b1 is overestimated or underestimated?
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