ecnometrics

The Gauss-Markov theorem says that, under certain assumptions, the OLS estimator of the coefficients of a linear regression model is the best linear unbiased estimator (BLUE). Best means: Select one: a. The expected value of the estimator equals to the true value of the parameter. b. The estimator is linear. c. The estimator is consistent. d. between two unbiased estimators, having the smallest variance. Clear my choice