Use this diagram to show your students that different sources give different numbers for the same thing. Why don’t they match? Well, data can be interpreted in different ways, and estimates can be made using different methods and/or baseline data. Definitions matter, too – different sources might define ‘numeracy’ or ‘adult’ differently. Which should you choose? The source itself is important – is it reliable? Are the figures recent? How might an organisation’s ‘agenda’ affect how it calculates and presents data?
Infographic - Vital statistics