Information and IdeasVery hardOne series rising while another stays flat
Information and Ideas practice question
Wolves counted in a region, and sheep lost to predators there, by year:
2015: 20 wolves, 400 sheep lost
2018: 45 wolves, 380 sheep lost
2021: 70 wolves, 410 sheep lost
2024: 90 wolves, 390 sheep lost
Which statement is best supported by the data?
- A. Wolf numbers more than quadrupled while sheep losses stayed roughly flat.Correct
- B. Sheep losses rose in step with wolf numbers.
- C. Wolf numbers fell over the period.
- D. Sheep losses were highest in 2015.
Answer: A. Wolf numbers more than quadrupled while sheep losses stayed roughly flat.
Wolves: 20 → 90, more than four times. Sheep lost: 400, 380, 410, 390 — no trend.
Why the other answers are wrong
- B. Sheep losses rose in step with wolf numbers.
- Sheep losses barely moved while wolves multiplied.
- C. Wolf numbers fell over the period.
- Wolf numbers rose every period.
- D. Sheep losses were highest in 2015.
- 2021's 410 is the highest.
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