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6 marksStatistical Diagrams

CSEC Mathematics · Question 7(b)

The frequency distribution below shows the masses, in kg, of 50 adults prior to the start of a fitness programme.

On the grid on page 23, using a scale of 2 cm to represent 5 units on the x-axis and 1 cm to represent 1 unit on the y-axis, draw a frequency polygon to represent the information in the table.

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

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Other parts of this question

  1. 7(a)(i)For the data above, determine the range.[1 mark]
  2. 7(a)(ii)For the data above, determine the median.[1 mark]
  3. 7(a)(iii)For the data above, determine the interquartile range.[2 marks]
  4. 7(a)(iv)Determine the probability that a student chosen at random scores less than half the total marks in the test.[2 marks]

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