Consider a problem of simple linear regression, and let ei
Chapter 11, Problem 17(choose chapter or problem)
Consider a problem of simple linear regression, and let ei = Yi 0 1xi denote the residual of the observation Yi (i = 1, . . . , n), as defined in Definition 11.3.2. Evaluate Var(ei) for given values of x1,...,xn, and show that it is a decreasing function of the distance between xi and x.
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