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could you help giving me explanation on this problem about Weighted Least Squares regression ? Thank you ! Question : What effect would putting a

could you help giving me explanation on this problem about Weighted Least Squares regression ? Thank you !

Question :

What effect would putting a very large weight, say 1000, on a point have on the regression line?What effect would putting a weight of 0 on a point have on the regression line?

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