What effect would an outlier have on the slope of a regression equation?
A)An outlier has no effect on a regression equation.
B)An outlier could either increase or decrease the slope, depending on its location.
C)An outlier always decreases the slope.
D)An outlier always increases the slope.

Question

Quizplus · Accepted Answer

Outliers can significantly affect the slope of a regression line because their position can pull the line towards them, either increasing or decreasing the slope depending on where they are located in relation to the main data cluster.

What Effect Would an Outlier Have on the Slope of a Regression