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Absolute, relative and percentage error
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Absolute, relative and percentage error
Absolute, relative and percentage error
Example 1
The accepted length is 60cm and a measured length is 61cm. Find the absolute error, in cm.
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Answer: 1
- Absolute error =∣measured − accepted∣=∣61−60∣=1cm.
Example 2
A measurement is 144cm while the accepted value is 140cm. Find the relative error as an exact fraction.
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Answer: 351
- Relative error = absolute error divided by the magnitude of the accepted value =1404=351.
Example 3
A measurement is 61cm while the accepted value is 60cm. Find the percentage error.
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Answer: 1.6666666666666667
- Percentage error =601×100=1.6666666667%.
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