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2 marksFrequency Tables

CSEC Mathematics · May/June 2011 · Paper 2 · Question 7(a)

Table shows distribution of masses of 100 packages.

Copy and complete the table to show the cumulative frequency for the distribution.

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(b)Using a scale of 2 cm to represent 10 kg on the x-axis and 1 cm to represent 10 packages on the y-axis, draw the cumulative frequency curve for the data.[5 marks]
  2. 7(c)(i)Estimate from the graph the median mass of the packages.[2 marks]
  3. 7(c)(ii)Estimate from the graph the probability that a package, chosen at random, has a mass which is LESS than 35 kg.[3 marks]

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