The absolute error between a measured or inferred value 
and its actual value 
is the absolute value of
their difference,
The absolute error of the sum or difference of a number of quantities is less than or equal to the sum
of their absolute errors.
See also
Error Propagation,
Percentage
Error,
Relative Error
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References
Abramowitz, M. and Stegun, I. A. (Eds.). Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, 9th printing.
New York: Dover, p. 14, 1972.Referenced on Wolfram|Alpha
Absolute Error
Cite this as:
Weisstein, Eric W. "Absolute Error." From
MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/AbsoluteError.html
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