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Evaluating Statistical Reports · Part 1 of 3
3 exam-style questions with model answers, plus 3 quick multi-choice questions — every question on this part of the standard, grouped by the 1 page of notes they come from.
Write a full answer before you reveal the model one. That comparison is where the learning happens.
A reporter interviews the first 25 people leaving a gym and concludes New Zealanders exercise regularly. Name the sampling method and one reason it is biased.
A magazine mails a survey to subscribers and reports results from the 12% who replied. Explain how non-response could bias the results.
A company surveys its own customers and reports '92% are satisfied,' concluding its product is the best on the market. Evaluate this fully and suggest a better method.