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2 marksMeasures of Dispersion

CSEC Mathematics · Question 7(a)(iii)

The marks obtained by 10 students in a test, scored out of 60, are shown below: 29, 38, 26, 42, 38, 45, 35, 37, 38, 31.

For the data above, determine the interquartile range.

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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)(iv)Determine the probability that a student chosen at random scores less than half the total marks in the test.[2 marks]
  4. 7(b)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…[6 marks]

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