About this topic
Before you begin
Interpret tables, line graphs and pie charts, then connect averages with totals and numbers of values.
Learning goals
- Interpret sector shares relative to a pie chart's whole
- 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
- Reading and interpreting data from pie charts
- Average as ‘total value ÷ number of data’
- Relationship between average, total value and number of data
Choose a lesson
Work through them in order.