Connect the ideas
Define population and frame before selecting units.
Distinguish census, sample and missing responses.
Association alone does not establish cause.
Use suitable displays and transparent summaries.
Larger random samples usually reduce variation but do not repair bias.
Report conclusions with limitations.
Topic test
Complete each paper and show your working.
Year 8 Statistics and sampling — Topic test
15 questions · 39 marks · 45 minutes · By hand