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3 marksDiagrammatic Representation of Numerical Data

CSEC Additional Mathematics · 2013 · Paper 2 · Question 7(b)(ii)

The marks obtained by 30 students on an English exam are given as a list of numbers.

Construct a stem and leaf diagram to show the data.

This question uses a figure or table from the paper — you'll see it when you practise.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 7(a)(i)Copy and complete the following tree diagram, by putting in all the missing probabilities, to show this information.[2 marks]
  2. 7(a)(ii)What is the probability that a customer pays for petrol with cash?[3 marks]
  3. 7(a)(iii)Determine which is the more likely event: Event T or Event V.[4 marks]
  4. 7(b)(i)State ONE advantage of using a stem and leaf diagram versus a box and whiskers plot to display the data.[1 mark]
  5. 7(b)(iii)Determine the median mark.[2 marks]
  6. 7(b)(iv)Calculate the semi inter-quartile range of the marks.[3 marks]
  7. 7(b)(v)Determine the probability that both scored less than 50 on the exam.[2 marks]

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