Multiple Choice
Pooling independent cross sections across time is useful in providing precise estimators if _____.
A) the relationship between the dependent variable and at least some of the independent variables remains constant over time
B) the relationship between the dependent variable and at least some of the independent variables is linear
C) the relationship between the dependent variable and at least one of the independent variables changes over time
D) the relationship between the dependent variable and at least one of the independent variables is positive
Correct Answer:

Verified
Correct Answer:
Verified
Q2: Ordinary least squares estimation is subject to
Q3: If each variable in a single cross-sectional
Q4: A natural experiment occurs when an endogenous
Q5: Which of the following assumptions is needed
Q6: Which of the following assumptions is required
Q8: Idiosyncratic error is the error that occurs
Q9: To see if the effect of an
Q10: Suppose we are studying the effects of
Q11: One way of organizing two periods of
Q12: A regression model exhibits unobserved heterogeneity if