Quelpr
3 marksMeasures of Central Tendency

CSEC Mathematics · 2022 · Paper 2 · Question 5(a)

A school nurse records the height, h\text{ cm}, of each of 150 students in Class A who were vaccinated.

Complete the table and use the information to calculate an estimate of the mean height of the students, giving your answer correct to 1 decimal place.

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. 5(b)Using the information provided, and your response in (a), comment on the distribution of the heights of the students in both Class A and Class B.[1 mark]
  2. 5(c)(i)Complete the cumulative frequency table below and use the information to construct the cumulative frequency curve on the grid provided on page 19.[1 mark]
  3. 5(c)(ii)a)Use your cumulative frequency curve to find an estimate of the median height of the group of students.[1 mark]
  4. 5(c)(ii)b)Use your cumulative frequency curve to find the probability that a student chosen at random would be taller than 130 cm.[1 mark]

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