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Unit 3

Summarising Data

Below you will find a selection of free resources to support your studies and revision.

 

We will continue to add to these resources so check back regularly to see what is available.

 

The GCSE Statistics resources on this website focus on the Edexcel specification.  However, many of the topics and resources will also be useful for those studying GCSE Statistics with other exam boards or even other qualifications.​

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Main Topics

  • The main topic areas of Summarising Data are:

  • Averages​​

  • Averages with frequency tables

  • Averages with grouped data

  • Averages from grouped data with unequal class widths (Higher only)

  • Averages and transforming data

  • Geometric and weighted means

  • Measures of dispersion

  • Interpercentile and interdecile ranges (Higher only)

  • Standard deviation (Higher only)

  • Box plots and outliers

  • Skewness

  • Comparisons of data sets

Course Extracts

Below are some extracts from our courses to support your own studies of this topic. 

These extracts also give you an insight into the resources included within our courses.

Geometric Mean

Interdecile Range 

Interpreting Cumulative Frequency Chart

Extra Resources

​If you are looking for further resources and more detailed teaching on this topic or GCSE Statistics more generally, then you may be interested in our self-paced online courses:

View resources for other course units

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