2026 RSS P1 Q11

2026 RSS P1 Q11

Secondary 4
3 marks

The stem-and-leaf diagram shows the reaction times, in seconds, of 12 drivers when responding to an unexpected hazard during a driving assessment.

The median of the data is 3.65.

Find

  1. the interquartile range of reaction times,[1]
  2. the value of \(c\).[2]

Solution:

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Answer:(a) \(1.05\) seconds (b) \(c=8\)

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