grade 12 · STAT2-006

Critique a statistical claim

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

Try with a hintFresh problem · seed 159910652

Students volunteer for a study of a new tutoring app, and app users later score higher. What is the strongest valid critique?

Give me one hint

Identify how participants were sampled.

The numerical result alone proves causation.A larger response always removes design bias.Self-selection may confound app use with motivation, so the result does not establish causation.The study is invalid because every sample must include the whole population.