Representing and interpreting data
Build and connect the representations and methods in representing and interpreting data.
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Before you begin
Build and connect the representations and methods in representing and interpreting data.
Learning goals
- Calculate and interpret the arithmetic mean
- Find a total from the mean and number of values
- Find the number of values from their total and mean
- Recover a missing or added value from a mean
- Combine group means through their totals and sizes
Syllabus statements covered
- average as ‘total value ÷ number of data’
- relationship between average, total value and number of data
In this topic
About lesson progress
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Average, total and number of values
Interpret the arithmetic mean as an equal share and recover totals before combining groups.