A regression model exhibits unobserved heterogeneity if _____.
A) there are unobserved factors affecting the dependent variable that change over time
B) there are unobserved factors affecting the dependent variable that do not change over time
C) there are unobserved factors which are correlated with the observed independent variables
D) there are no unobserved factors affecting the dependent variable
Correct Answer:
Verified
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Q15: Which of the following is a reason
Q16: The average treatment effect measures _.
A)the effect
Q17: A Chow test _.
A)is used to test
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Q20: A natural experiment occurs when an endogenous
Q21: One way of organizing two periods of
Q22: A natural experiment always has a control
Q23: First-differenced estimation gives unbiased estimators if the
Q24: In a natural experiment, the same cross-sectional
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