grade 12 · STAT2-006

Critique a statistical claim

Match the strength of a conclusion to sampling, assignment, measurement, and possible confounders.

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A school randomly assigns volunteers to two study methods but recruits from one honors class. What is the strongest valid critique?

The numerical result alone proves causation.A larger response always removes design bias.Random assignment supports a causal comparison for participants, but the narrow sample limits generalization.The study is invalid because every sample must include the whole population.