Examining the formula for the sampling variance of A in simple regression, VA 2 Px2
Question:
Examining the formula for the sampling variance of A in simple regression, VðAÞ ¼ σ2
ε
Px2 i
n Pðxi ' xÞ
2 why is it intuitively sensible that the variance of A is large when the mean of the xs is far from 0? Illustrate your explanation with a graph.
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Related Book For
Applied Regression Analysis And Generalized Linear Models
ISBN: 9781452205663
3rd Edition
Authors: By John Fox
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