16Hit1600
Information and IdeasMediumDescribing a series accurately

Information and Ideas practice question

Number of nesting pairs of terns on an island: 2020: 30 2021: 45 2022: 45 2023: 60 2024: 50

Which statement is best supported by the data?

  1. A. Pairs rose by 15 in 2021 and 2023, were unchanged in 2022, and fell by 10 in 2024.Correct
  2. B. Pairs rose every year.
  3. C. 2024 had the most pairs.
  4. D. Pairs fell between 2021 and 2022.

Answer: A. Pairs rose by 15 in 2021 and 2023, were unchanged in 2022, and fell by 10 in 2024.

30 → 45 → 45 → 60 → 50.

Why the other answers are wrong

B. Pairs rose every year.
2022 was flat and 2024 fell.
C. 2024 had the most pairs.
2023's 60 is the most.
D. Pairs fell between 2021 and 2022.
2021 and 2022 were both 45.

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