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Two hundred observations from AR(2) yields the following sample statistics: xˉ=3.82,γ​X​(0)=1.15,ρ​X​(1)=0.427,ρ​2​=0.47

Posted: Thu Jul 14, 2022 4:51 pm
by answerhappygod
 1
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Two hundred observations from AR(2) yields the following sample statistics: xˉ=3.82,γ​X​(0)=1.15,ρ​X​(1)=0.427,ρ​2​=0.475. - Find the Yule-Walker estimators of ϕ1​,ϕ2​ and σZ2​. - Is the estimated model causal? - If X100​=3.84 and X99​=3.26, what is the predicted value of X101​?