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HigherNon-calculatorS4 Averages

Question 1 · 4 marks

Spec and skills
  • Paper scope: Paper 1: non-calculator practice
  • Spec S4
  • Spec A17
  • Original practice question
  • Answer and supported method checks
A box plot has minimum 5 and median 20. The interquartile range is 12 and the range is 30. The distance from the median to the upper quartile is twice the distance from the lower quartile to the median.
(a)
Work out the lower quartile.
3 marks