Expression of IdeasEasy–MediumReporting a comparison
Expression of Ideas practice question
While researching a topic, a student has taken the following notes:
- A school compared two ways of teaching pupils to swim.
- Group A had two 30-minute lessons a week; Group B had one 60-minute lesson.
- After a term, 80% of Group A could swim 25 metres.
- After a term, 55% of Group B could.
The student wants to compare the results of the two approaches. Which choice most effectively uses relevant information from the notes to accomplish this goal?
- A. After a term, 80% of pupils who had two 30-minute lessons a week could swim 25 metres, compared with 55% of those who had one 60-minute lesson.Correct
- B. The school compared two ways of teaching swimming.
- C. Group B had one 60-minute lesson a week.
- D. After a term, 80% of Group A could swim 25 metres.
Answer: A. After a term, 80% of pupils who had two 30-minute lessons a week could swim 25 metres, compared with 55% of those who had one 60-minute lesson.
Both approaches and both results.
Why the other answers are wrong
- B. The school compared two ways of teaching swimming.
- Setup, no result.
- C. Group B had one 60-minute lesson a week.
- One approach, no result.
- D. After a term, 80% of Group A could swim 25 metres.
- One figure can't compare.
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