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3 marksFrequency Tables

CSEC Mathematics · January 2012 · Paper 2 · Question 7(a)

The histogram below shows the distribution of heights of seedlings in a sample.

Copy and complete the frequency table for the data in the sample.

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)(i)Determine the modal class interval.[1 mark]
  2. 7(b)(ii)Determine the number of seedlings in the sample.[2 marks]
  3. 7(b)(iii)Determine the mean height of the seedlings.[4 marks]
  4. 7(b)(iv)Determine the probability that a seedling chosen at random has a height that is GREATER than 30 cm.[2 marks]

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