Contents
Key Stage 4
Meaning
Uncertainty is the amount by which a reading may be different from the true value.
About Uncertainty
- Uncertainty is caused by random errors which take place during an experiment.
- The uncertainty in a reading can be found by repeating the reading and halving the range of those readings.
\(Uncertainty=\frac{range}{2}\).
- The uncertainty in a result is how far above or below the average result the true value may be.
Examples
The range is found by subtracting the smallest from the largest value and the uncertainty can be found by halving that range.
The uncertainties in this results table are: 0/2 = 0 0.5/2 = 0.25 0.3/2 = 0.15 0.2/2 = 0.1 0.4/2 = 0.2 0.5/2 = 0.25 |
References
AQA
- Uncertainties, page 10, GCSE Combined Science; The Revision Guide, CGP, AQA
- Uncertainties, page 10, GCSE Physics; The Revision Guide, CGP, AQA
- Uncertainties, page 14, GCSE Combined Science Trilogy; Physics, CGP, AQA
- Uncertainties, page 15, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Uncertainties, pages 126-7, GCSE Chemistry, Hodder, AQA
- Uncertainties, pages 228-9, 289, GCSE Combined Science Trilogy 1, Hodder, AQA
- Uncertainties, pages 34-5, GCSE Physics, Hodder, AQA
- Uncertainty, of measurement, page 87, GCSE Physics; Student Book, Collins, AQA
- Uncertainty, page 10, GCSE Biology; The Revision Guide, CGP, AQA
- Uncertainty, page 11, GCSE Chemistry; The Revision Guide, CGP, AQA
- Uncertainty, page 15, GCSE Biology, CGP, AQA
- Uncertainty, page 15, GCSE Combined Science Trilogy; Biology, CGP, AQA
- Uncertainty, page 228-9, GCSE Biology; Student Book, Collins, AQA
- Uncertainty, page 270, GCSE Chemistry; Third Edition, Oxford University Press, AQA
- Uncertainty, page 283, GCSE Physics; Third Edition, Oxford University Press, AQA
- Uncertainty, pages 104-5, GCSE Chemistry; Student Book, Collins, AQA
- Uncertainty, pages 14, 15, 130, GCSE Chemistry, CGP, AQA
- Uncertainty, pages 15, 119, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
Edexcel
- Uncertainties, page 10, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Uncertainties, page 11, GCSE Biology; The Revision Guide, CGP, Edexcel
- Uncertainties, page 11, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Uncertainties, page 15, GCSE Physics, CGP, Edexcel
- Uncertainties, pages 14, 15, GCSE Chemistry, CGP, Edexcel
- Uncertainty, page 15, GCSE Biology, CGP, Edexcel
OCR
- Uncertainties, page 10, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR
- Uncertainties, page 17, Gateway GCSE Biology, Oxford, OCR
- Uncertainties, pages 17, Gateway GCSE Physics, Oxford, OCR
- Uncertainty, page 11, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR
- Uncertainty, page 11, Gateway GCSE Physics; The Revision Guide, CGP, OCR
- Uncertainty, page 17, Gateway GCSE Chemistry, Oxford, OCR