Information and IdeasVery hardRecognising a rate versus a total
Information and Ideas practice question
Two schools' exam results:
School A: 240 pupils sat, 180 passed
School B: 80 pupils sat, 64 passed
A journalist claims that School B had the better pass rate. Which choice most effectively uses data from the table to support the claim?
- A. School B's pass rate was 80% (64 of 80), compared with 75% (180 of 240) at School A.Correct
- B. School A had more passes than School B.
- C. School B is smaller than School A.
- D. School B had 64 passes.
Answer: A. School B's pass rate was 80% (64 of 80), compared with 75% (180 of 240) at School A.
Rates: 64/80 = 80% and 180/240 = 75%.
Why the other answers are wrong
- B. School A had more passes than School B.
- Totals favour A and ignore the number who sat.
- C. School B is smaller than School A.
- Size alone says nothing about pass rate.
- D. School B had 64 passes.
- A count without a rate.
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