Information and IdeasHardChoosing data that fit a claim about a proportion
Information and Ideas practice question
A survey asked residents of two districts whether they had used the new night bus.
District | Asked | Had used it
Westfield | 300 | 60
Eastgate | 120 | 42
The transport officer argues that the night bus is more established in Eastgate, even though ____
Which choice most effectively uses data from the table to complete the statement?
- A. more Westfield residents had used it, 60 to 42, since Eastgate's 42 is 35% of those asked against Westfield's 20%.Correct
- B. Westfield had 300 residents asked.
- C. 42 Eastgate residents had used it.
- D. Eastgate had fewer residents asked.
Answer: A. more Westfield residents had used it, 60 to 42, since Eastgate's 42 is 35% of those asked against Westfield's 20%.
60/300 = 20%; 42/120 = 35%.
Why the other answers are wrong
- B. Westfield had 300 residents asked.
- Sample size alone.
- C. 42 Eastgate residents had used it.
- A count, no comparison.
- D. Eastgate had fewer residents asked.
- Sample size alone.
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