(Requires Appendix material) The sample average of the OLS residuals is
A) some positive number since OLS uses squares.
B) zero.
C) unobservable since the population regression function is unknown.
D) dependent on whether the explanatory variable is mostly positive or negative.
Correct Answer:
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Q2: The following are all least squares
Q3: The regression Q4: The slope estimator, Q6: If the three least squares assumptions Q7: The OLS residuals, Q9: To obtain the slope estimator using Q10: When the estimated slope coefficient in Q11: (Requires Appendix material) The sample regression Q12: The OLS residuals Q16: Binary variables
A)can be calculated using the
A)are generally used to control for
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