absolute error

noun

Definition of absolute error 

mathematics

: the absolute value of the difference between an observed value of a quantity and the true value The difference between true length and measured length is called the error of measurement or absolute error.— Edwina Deans et al., Extending Mathematics, 1968

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First Known Use of absolute error

1775, in the meaning defined above

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The first known use of absolute error was in 1775

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