Relative error
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It has been suggested that this article or section be merged with [[::Relative and absolute error|Relative and absolute error]]. (Discuss)
Relative error in a measurement is the ratio of the absolute error to the size of the measurement.
Relative error is often written as a percent and called the percent of error.
Relative error is contrasted with the absolute error, which is the difference between an approximation and the exact value.