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2 marksFrequency Tables

CSEC Mathematics · May/June 2012 · Paper 2 · Question 7(a)

The table shows the ages, to the nearest year, of persons who visited a clinic during a particular week, along with the number of persons in each age group.

Copy and complete the table to show the cumulative frequency.

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Other parts of this question

  1. 7(b)Using a scale of 2 cm to represent 10 years on the x-axis and 1 cm to represent 5 persons on the y-axis, draw the cumulative frequency curve for the data.[5 marks]
  2. 7(c)(i)Use your graph drawn at (b) above to estimate the median age for the data.[2 marks]
  3. 7(c)(ii)Use your graph drawn at (b) above to estimate the probability that a person who visited the clinic was 75 years or younger. Draw lines on your graph to show…[2 marks]

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