Which statement about influential points is true?
A)Removal of an influential point changes the regression line.
B)A high leverage point is always influential.
C)Influential points have large residuals.
D)All outliers are influential.
E)None of these.

Question

Quizplus · Accepted Answer

Influential points significantly affect the slope and intercept of a regression line. Removing or altering these points can lead to noticeable changes in the regression model's parameters, hence A is correct. High leverage points are not always influential (B is incorrect), influential points do not necessarily have large residuals (C is incorrect), and not all outliers are influential (D is incorrect).

Which Statement About Influential Points Is True