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Using the Hat Matrix Elements Hi to Determine Influential Points

Question 59

Multiple Choice

Using the hat matrix elements hi to determine influential points in a multiple regression model with k independent variable and n observations, Xi is an influential point if


A) hi < n(k +1) /2.
B) hi > n(k +1) /2.
C) hi < 2(k +1) /n.
D) hi > 2(k +1) /n.

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