Question: d. What is the risk we run when we do not include an intercept in the regression? Q4. Show that the covariance $left(widehat{beta}_{1}, widehat{beta}_{2} ight)=frac{-bar{X}

d. What is the risk we run when we do not

d. What is the risk we run when we do not include an intercept in the regression? Q4. Show that the covariance $\left(\widehat{\beta}_{1}, \widehat{\beta}_{2} ight)=\frac{-\bar{X} \sigma^{2}}{\Sigma_{i=1} x_{i}^{2}}$ S.P.PB. 245

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