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Information and IdeasHardUsing all four rows to support a pattern

Information and Ideas practice question

Cyclists counted at a junction and that day's average temperature: Monday: 14°C, 310 cyclists Tuesday: 22°C, 480 cyclists Wednesday: 9°C, 210 cyclists Thursday: 18°C, 400 cyclists

A planner claims that more cyclists use the junction on warmer days. Which choice most effectively uses data from the table to support the claim?

  1. A. The warmest day, Tuesday at 22°C, had the most cyclists (480) and the coldest, Wednesday at 9°C, had the fewest (210), with the other two days in between on both measures.Correct
  2. B. Tuesday had 480 cyclists.
  3. C. Monday's average temperature was 14°C.
  4. D. Thursday had more cyclists than Monday.

Answer: A. The warmest day, Tuesday at 22°C, had the most cyclists (480) and the coldest, Wednesday at 9°C, had the fewest (210), with the other two days in between on both measures.

The claim is a relationship between two variables; choice A shows both variables ranking the days the same way.

Why the other answers are wrong

B. Tuesday had 480 cyclists.
One count with no temperature attached.
C. Monday's average temperature was 14°C.
One temperature with no count attached.
D. Thursday had more cyclists than Monday.
True, but it doesn't mention temperature at all.

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