[Objective: Determine the Effects of Outliers on a Regression Equation

Multiple Choice

[Objective: Determine the effects of outliers on a regression equation.] What effects might an outlier have on a regression equation?

A) An outlier has no effect on a regression equation.
B) An outlier may affect only the slope of a regression equation.
C) An outlier may affect only the correlation coefficient of a regression equation.
D) An outlier may affect both the slope and the correlation coefficient of a regression equation.
Use the following information to answer Questions (15) and (16) .
The scatterplot below shows the relationship between the ages of women when they first married and the ages when they had their first child. The correlation coefficient between the values is 0.9315.