OCR GCSE Chemistry B · J258
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
Revise: Apparatus and techniquesRepeated measurements might be very close together, so they would be precise, but all would be displaced from the true value and therefore inaccurate. This is a systematic error. Calibration can help identify such a problem.
- Revise: Evaluating data quality
An error that shifts measurements consistently away from the true value, usually in the same direction.