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Explain the Gauss-Markov assumptions required for unbiasedness and efficiency of the OLS estimator. Distinguish between the...

  1. Explain the Gauss-Markov assumptions required for unbiasedness and efficiency of the OLS estimator. Distinguish between the assumptions for simple and multiple linear regressions. Provide examples of violations of each assumption. Under what circumstances are coefficient estimates from MLR and SLR identical?

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