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ZIMSEC O-Level Mathematics

9Statistics

Statistics in ZIMSEC O-Level Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Topic137 practice questions7 lessons

Learning objectives

What the syllabus expects you to be able to do.

  1. 9.0.1Collect, classify and tabulate data, including grouped data in frequency tables.
  2. 9.0.2Draw, read and interpret bar charts, pie charts, histograms, frequency polygons and frequency tables, and draw simple inferences from them.
  3. 9.0.3Calculate the mean, median, mode and range of data, use an assumed mean where appropriate, and identify the modal class of grouped data.
  4. 9.0.4Draw cumulative frequency curves and use them to estimate the median, quartiles, interquartile range and semi-interquartile range.

Lessons

  • Averages and range

    17 min

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  • Averages of grouped data

    16 min

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  • Collecting and classifying data

    16 min

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  • Cumulative frequency

    16 min

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  • Histograms and frequency polygons

    16 min

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  • Interpreting statistical data

    17 min

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  • Statistical charts and diagrams

    17 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Statistics: sample question

1 mark

Find the mean of 6, 9, 4, 11 and 10.

Only if the answer has a unit, e.g. cm or km/h.

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