Prove Equation 10.9. That is, given the standard univariate regression,
Y=α+βX+?
Prove that
where σ X and σ Y are the standard deviations of X and Y, respectively, and ρXY is the correlation between the two.
Prove Equation 10.9. That is, given the standard univariate regression,
Y=α+βX+?
Prove that
where σ X and σ Y are the standard deviations of X and Y, respectively, and ρXY is the correlation between the two.
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