Mathematics · Regression Analysis
In the linear regression model Yi = α + βXi + ei, under the standard Gauss-Markov assumptions, the variance of the OLS slope estimator b̂ is given by:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Σ(Yi - Y̅)2σ2
- 2Σ(Xi - X̅)2σ2
- 3σ2Σ(Xi - X̅)2✓
- 4σ2
Correct answer
σ2Σ(Xi - X̅)2
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