BRAINCAKEAccuracy and Precision
Accuracy and precision describe different qualities of results.
A measurement is accurate if it is close to the true value (the accepted value, for example from a data book).
A set of repeated measurements is precise if the values are close to each other, so they have a small spread about the mean. Precision says nothing about whether the values are right.
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
More in Errors and Uncertainties
- Errors vs Mistakes
- Random Errors and Systematic Errors
- Uncertainty
- Percentage Uncertainty
- Adding Uncertainties
- Adding Percentage Uncertainties
- Minimising Errors and Uncertainties
- Percentage Yield
All 14 lessons in Errors and Uncertainties · All Edexcel AS-level Chemistry topics