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

question 7

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.

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Definitions:

Electroconvulsive Therapy

A medical treatment most commonly used for severe major depression which involves brief electrical stimulation of the brain while the patient is under anesthesia.

Deep Brain Stimulation

A neurosurgical procedure that involves implanting electrodes within certain areas of the brain to regulate abnormal impulses in conditions like Parkinson's disease.

Pregnant

The state of carrying a developing fetus within the female body.