Mathematics · Grades 6–10
Data interpretation and misleading summaries · Revision card
Check the axis, units, scale, population and sample size.
Understand the idea
Read the full display
Check the axis, units, scale, population and sample size.
Choose the summary
Mean, median and range describe different features.
Limit the claim
An association alone does not identify a cause.
Worked examples
Find the median of 2, 3, 3, 5 and 17.
The middle value in the ordered list is 3.
3
Find the mean of 2, 3, 3, 5 and 17.
The sum is 30; 30/5 = 6.
6
Explain without looking
- Explain why a survey should report the wording of its question.
Preview material · independent educational review required. Grade bands are approximate, not official curriculum alignment.