Information and IdeasVery hardChoosing data that fit a precise claim
Information and Ideas practice question
A charity recorded the number of volunteers and the hours they gave each year.
Year | Volunteers | Total hours
2023 | 120 | 3,600
2024 | 150 | 3,750
2025 | 180 | 3,780
The charity's report notes that although the number of volunteers has grown, the average hours per volunteer have fallen: ____
Which choice most effectively uses data from the table to complete the statement?
- A. from 30 hours each in 2023 to 21 hours each in 2025.Correct
- B. total hours rose from 3,600 to 3,780.
- C. volunteers rose from 120 to 180.
- D. from 25 hours each in 2024 to 30 in 2023.
Answer: A. from 30 hours each in 2023 to 21 hours each in 2025.
3,600 ÷ 120 = 30; 3,780 ÷ 180 = 21.
Why the other answers are wrong
- B. total hours rose from 3,600 to 3,780.
- Total hours rose; the claim is about the average.
- C. volunteers rose from 120 to 180.
- The growth in volunteers is the premise, not the fall in average.
- D. from 25 hours each in 2024 to 30 in 2023.
- The years are reversed and the comparison does not run to 2025.
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