Averages and spread 2

This is a revision activity to remind students how to calculate and interpret different measures of location and dispersion. It covers calculations with raw data, discrete frequency distributions and grouped frequency distributions. It can be presented as worked examples, with solutions incorporated, or as questions only, for students and teacher to work through together.

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Overview of task

This is a revision activity to remind students how to calculate and interpret different measures of location and dispersion. It covers calculations with raw data, discrete frequency distributions and grouped frequency distributions. It can be presented as worked examples, with solutions incorporated, or as questions only, for students and teacher to work through together.

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Strand

Statistics

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Prior knowledge

Calculation of measures of location and dispersion.

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Relevance to Core Maths qualifications

  • AQA
  • C&G
  • Eduqas
  • Pearson / Edexcel
  • OCR

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Suggested approaches

Suitable for revision.

The definitions task in Averages and spread 1 and the worked examples in Averages and spread 2 would be a good start to a revision lesson that explored the advantages and disadvantages of each measure as well as when each is appropriate and why there is more than one way to measure both average and spread. Alternatively, they could be used as guidance sheets for students’ independent revision.

There is a linked student exercise Averages and spread 3, which provides further revision.

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Resources/documentation

In addition to this overview there are:

  • handout with questions only
  • teacher guidance, which could be used as a handout with worked solutions.

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Relevant digital technologies

n/a

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Acknowledgement

The resource was developed by Nicola Smith at Cardinal Newman College, Preston.