Special case of variance


Derive the expression in σ2(b0)=σ2(1/n+x-bar2/Σ(Xi-X-bar)2) for the variance of b0, making use of σ(Y-bar,b1)=0.

Also explain how variance σ2(b0)=σ2(1/n+x-bar2/Σ(Xi-X-bar)2) is a special case of variance σ2(Yh-hat)=σ(1/n+(Xh-X-bar)2/Σ(Xi-X-bar)2).

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Basic Statistics: Special case of variance
Reference No:- TGS0841659

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