2 marksClass Features
CSEC Mathematics · January 2013 · Paper 2 · Question 7(b)(i)a)
Copy and complete the table to show the class mid-points.
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Practise this questionOther parts of this question
- 7(a)(i)State the modal class interval.[1 mark]
- 7(a)(ii)State the class interval in which a score of 19.4 would lie.[1 mark]
- 7(b)(i)b)Copy and complete the table to show the values of "f x x".[2 marks]
- 7(b)(ii)Calculate the mean score for the sample.[3 marks]
- 7(c)Explain why the value of the mean obtained in (b)(ii) is only an estimate of the true value.[1 mark]
- 7(d)What is the probability that a student selected at random qualifies for the next round?[2 marks]
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