Combined Science GCSE
Random and systematic error
What Random and systematic error means in Combined Science GCSE, as defined for AQA.
Definition of Random and systematic error
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Reference: AQA
Repeating a measurement and taking a mean reduces the effect of random variation, but a systematic offset such as a zero error shifts all results and is not removed by averaging.
Topics that use Random and systematic error
- Chemical measurements (AQA GCSE)
Related terms
- Distribution
- Instrument resolution and precision
- Mean
- Measurement and uncertainty
- Precision and repeatability of measurements
- Range as a measure of spread
- Evaluating experimental data
- Range
Using Random and systematic error in the exam
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