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GCSE Statistics · key term
A small-scale trial of an experiment used to identify problems with its design or procedure before the full experiment.
Used by Edexcel
Specification 1d.04 · Paper 1, Paper 2
Revise: Planning data collectionA pre-test runs an experiment on a small scale. It checks whether the procedure works and whether the measurements can be recorded as intended. Problems can then be corrected before committing time and resources to the full experiment.
A pilot or pre-test identifies problems before full collection; it does not guarantee unbiased results.
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