econ

  

  

1. We showed in      the notes that the OLS estimators can be written as the sum of the true      coefficient and a linear combination of the error terms:

                   
  

Prove that OLS estimators are unbiased.We showed in      the notes that the OLS estimators can be written as the sum of the true      coefficient and a linear combination of the error terms:

                   
  

Prove that OLS estimators are unbiased.