Which statement about influential points is true?
I. Removal of an influential point changes the regression line.
II. Data points that are outliers in the horizontal direction are more likely to be influential than
Points that are outliers in the vertical direction.
III. Influential points have large residuals.
A) I, II, and III
B) I and III
C) II and III
D) I only
E) I and II

Question

Quizplus · Accepted Answer

Influential points often change the regression line when removed (I), and horizontal outliers are more likely to be influential (II). However, influential points do not necessarily have large residuals (III).

Which Statement About Influential Points Is True