queenkair49 queenkair49

21-02-2024
Mathematics

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Consider the multiple regression model y=xβ+εlon. The Gauss-Markov conditions hold: E[εlon]=0 and var[εlon]=σ²I. In addition, εloni∼N(0,σ). We have shown that the estimator of (β) is given by (β)=(x'x)⁻¹x'y.
a. Use properties of the trace to find E[y'(I-H)y].

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