OCR GCSE Biology B · J257
Paper 1 (Foundation), Paper 2 (Foundation), Paper 3 (Higher), Paper 4 (Higher)
How close repeated measurements are to one another; precise measurements have little spread.
Revise: Apparatus and TechniquesPrecision describes how closely repeated measurements agree. If repeated readings have only a small spread, they are precise. Random variation, such as slight differences in judging an endpoint, tends to reduce precision.
- Revise: Significant Figures
How closely repeated measurements agree with one another; the digits reported should not imply more precision than the measurements support.