Absolute Error or Absolute Uncertainty Definition

Chemistry Glossary Definition of Absolute Error

Error reflect the amount of uncertainty in a measurement.
Error reflect the amount of uncertainty in a measurement. Stockbyte, Getty Images
Absolute Error Definition: Absolute error or absolute incertainty is the uncertainty in a measurement, which is expressed using the relevant units. Also, absolute error may be used to express the inaccuracy in a measurement.

Examples: If a measurement is recorded to be 1.12 and the true value is known to be 1.00 then the absolute error is 1.12 - 1.00 = 0.12. If the mass of an object is measured three times with values recorded to be 1.00 g, 0.95 g, and 1.05 g, then the absolute error could be expressed as +/- 0.05 g.

Also Known As: Absolute Uncertainty

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Helmenstine, Anne Marie, Ph.D. "Absolute Error or Absolute Uncertainty Definition." ThoughtCo, Nov. 29, 2014, thoughtco.com/absolute-error-or-absolute-uncertainty-definition-604348. Helmenstine, Anne Marie, Ph.D. (2014, November 29). Absolute Error or Absolute Uncertainty Definition. Retrieved from https://www.thoughtco.com/absolute-error-or-absolute-uncertainty-definition-604348 Helmenstine, Anne Marie, Ph.D. "Absolute Error or Absolute Uncertainty Definition." ThoughtCo. https://www.thoughtco.com/absolute-error-or-absolute-uncertainty-definition-604348 (accessed January 22, 2018).