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
Answer: B
You might also like to view...
In the context of formulating environmental policy, President Reagan’s Executive Order 12291 is primarily responsible for the increased use of
a. benefit-cost analysis c. risk-benefit analysis b. risk-risk analysis d. relative risk reduction
All points on the production possibilities frontier
A) are production inefficient. B) achieve allocative efficiency. C) are production efficient but only one point achieves allocative efficiency. D) are allocatively efficient but only one point achieves production efficiency. E) are allocatively inefficient.
Contingency fees
a. are illegal in many countries. b. are calculated as a percentage of the total damage award. c. are similar to punitive damages. d. according to some reformers, should be increased to discourage further lawsuits. b. both a and b.
An accurate demand curve can be derived by examining the quantities of a good that are sold over time as the price varies
a. True b. False Indicate whether the statement is true or false