PSAT Math Multiple-Choice Question 823: Answer and Explanation

Question: 823

Which of the following would be the most helpful piece of information to have about the data collected for the table in order to ensure comprehensive and accurate results?

• A. Prices at other retailers, such as restaurants
• B. A calculation of what the prices would be with twice as large a sale
• C. A survey of store managers about employee motivation
• D. If sales tax is included in the prices

Correct Answer: D

Explanation:

(D) The table does not specify whether or not sales tax is included in the given prices. If it is, the impact on the sales may be less pronounced than if sales tax is not included since consumers will still have to pay money in tax even if the item is on sale. The other choices would give irrelevant information. Choice (A) is incorrect because the prices at other retailers would not help determine the impact of sales at these stores. Choice (B) is incorrect because conducting a calculation will not give concrete information that will help you make a better prediction. Choice (C) is incorrect because no clear connection exists between employee motivation and the impact that these specific discounts would have on sales.