PSAT Math Multiple-Choice Question 145: Answer and Explanation

Question: 145

Which of the following statements about the relationship between years of ownership and selling price is true?

• A. As the number of years of ownership increases, the selling price decreases.
• B. As the number of years of ownership decreases, the selling price decreases.
• C. As the number of years of ownership increases, the selling price increases.
• D. As the number of years of ownership decreases, the selling price remains constant.

Correct Answer: A

Explanation:

A

The question asks for the relationship between years of ownership and selling price. Look at the graph. There is clearly a downward trend in both the scatterplot and the line of best fit. Therefore, this is a negative correlation: as one variable increases, the other variable decreases. Eliminate (B), (C), and (D), which do not describe such a relationship. The correct answer is (A).