D Y B B X Et a use the oLs method to estimate B b Pls prove unbiase namely El B B c what is Var B Yi Bixi Ei a Pls prove Xi Ji X

Question

D Y B B X Et a use the oLs method to estimate B b Pls prove unbiase namely El B B c what is Var B Yi Bixi Ei a Pls prove Xi Ji X b What is Var B Set a regression mode fi pls prove n X Y B lxy X Ji x x Cov X y Var X Note Exy To SWIE 13

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