Uncertainty
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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
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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 |