How to teach critiquing statistical reports in the media
Year 9 to Year 10 (ages 14 to 16)
Not every statistical claim in the media is trustworthy. This unit builds a habit of questioning how data was gathered, whether a graph or statistic is presented fairly, and whether a stated conclusion is actually supported by the evidence.
How to teach it
- Present a real or realistic media claim and ask: how was the data collected, and by whom?
- Check for a missing comparison group (e.g. a health claim with no control group to compare against).
- Look for graph tricks: a broken y-axis, an inconsistent scale, or a cropped time range that exaggerates a trend.
- Discuss correlation versus causation using a clear example (e.g. ice cream sales and drowning both rise in summer, but one does not cause the other).
- Practise rewriting a misleading claim into an honest one that still uses the same underlying data.
Common mistakes
- Accepting a statistic at face value without asking how the data behind it was collected.
- Assuming a correlation automatically means one variable causes the other.
- Not noticing when a graph's axis has been broken or manipulated to exaggerate a difference.
- Confusing a large-sounding number (e.g. '10,000 people surveyed') with a genuinely representative sample.
Frequently asked questions
What should you check in a statistical claim from the media?
How the data was gathered (sample size, sampling method), whether there is a comparison group, whether the display (e.g. graph axes) is misleading, and whether the conclusion actually follows from the evidence presented.
Does correlation prove causation?
No. Two variables can rise and fall together (correlation) without one causing the other; a third factor might explain both, or the link could be coincidental. A careful reader always asks what else could explain the pattern.
What is a common way graphs can mislead?
A broken or non-zero y-axis can make a small difference look dramatic, since the visual gap no longer matches the true proportional difference between the values.
What year is critiquing statistical reports taught?
In the Australian Curriculum, analysing survey reports in the media is a Year 9 skill (AC9M9ST01), extending to a fuller critique of claims, inferences and possible bias, including ethics, at Year 10 (AC9M10ST01).
Practise with free worksheets
Printable worksheets with answer keys that are never wrong.