OCR GCSE Chemistry B · J258
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Risk and benefit analysisA calculated risk is this kind of statistical estimate. It does not mean that scientists can predict exactly what will happen to one particular person. If an outcome occurs in 1 person out of every 10,000 in a year, the estimate describes a group frequency, not which individual will be affected.