Q. 0 is probability of observing Y when all Xs are 0. Answer: a 7) (12 points) One should never bother with WLS. Using OLS with robust standard errors gives correct inference, at least asymptotically. True- false or a bit of both? Explain carefully what quote means and evaluate it critically.
Q. Plot residual by time and explain residual plot where you find any problem. Do we violate any 7 assumptions of OLS? If so, what are consequences?