OCR H240/02 2019 June — Question 8

Exam BoardOCR
ModuleH240/02 (Pure Mathematics and Statistics)
Year2019
SessionJune
TopicMeasures of Location and Spread
TypeFind median and quartiles from stem-and-leaf diagram
8 The stem-and-leaf diagram shows the heights, in centimetres, of 17 plants, measured correct to the nearest centimetre.
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Key: 5 | 6 means 56
  1. Find the median and inter-quartile range of these heights.
  2. Calculate the mean and standard deviation of these heights.
  3. State one advantage of using the median rather than the mean as a measure of average for these heights.
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