16Hit1600
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?

  1. A. from 30 hours each in 2023 to 21 hours each in 2025.Correct
  2. B. total hours rose from 3,600 to 3,780.
  3. C. volunteers rose from 120 to 180.
  4. 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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