SAT Math Multiple Choice Question 584: Answer and Explanation
14. In a 2010 poll, surveyors asked registered voters in four different New York voting districts whether they would consider voting to ban fracking in the state. Hydraulic fracturing, or "fracking," is a mining process that involves splitting rocks underground to remove natural gas. According to ecologists, environmental damage can occur as a result of fracking, including contamination of water. The results of the 2010 survey are shown in the following table.
|In Favor of Ban||Against Ban||No Opinion||Total|
According to the data, which district had the smallest percentage of voters with no opinion on fracking?
- A. District A
- B. District B
- C. District C
- D. District D
Correct Answer: D
Category: Problem Solving and Data Analysis / Statistics and Probability
Strategic Advice: You do not need to use all of the information presented in the table to find the answer. Read the question carefully to make sure you use only what you do need.
Getting to the Answer: To calculate the percentage of the voters in each district who had no opinion on fracking, divide the number of voters in that district who had no opinion by the total number of voters in that district. Choice (D) is correct because 3,205 ÷ 63,539 ≈ 0.05 = 5%, which is a lower percentage than in the other three districts that were polled (District A = 8%; District B = 7.6%; District C = 6%).