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    Finding Expected Value of Slope and Variance of Residuals

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    1. Given the following Equation show that for the estimator b1, E[b1] = B1

    yi=B1*Xi1+(epsilon)i
    b1 = (sum(yi*xi1))/(sum((xi1)^2))

    2. ei = yi-yhat = yi-bi*xi1 equal the residual

    find var(ei)

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    https://brainmass.com/statistics/ordinary-least-squares/finding-expected-value-slope-variance-residuals-588144

    Solution Summary

    The solution gives detailed steps on finding two statistic on regression: one is the expected value of slope and the other is the variance of residuals. Attached in Word.

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