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2 marksStatistical Diagrams

CSEC Mathematics · Question 5(a)(i)

A survey was conducted among 48 persons to find out what mobile network they used. The results are shown in a table.

If this information is to be represented on a pie chart, what is the angle for the sector that will represent O-Fone?

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Other parts of this question

  1. 5(a)(ii)Using the circle below, with radius shown, represent the information in the table above on a clearly labelled pie chart.[3 marks]
  2. 5(b)(i)A girl is chosen at random. Determine the probability that she achieves a Grade I.[1 mark]
  3. 5(b)(ii)What percentage of the boys who took the exam achieved Grades I to III?[2 marks]
  4. 5(b)(iii)Considering the standard deviations in the table on page 18, compare the performance of the boys and the girls.[1 mark]

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