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GCSE Chemistry · key term
Unpredictable variation that causes repeated measurements to differ from one another.
Used by OCR
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Unpredictable variation that makes repeated measurements differ and produces scatter in the data.
When classifying an error, state its effect: random error produces unpredictable variation, whereas systematic error shifts measurements consistently in one direction.
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