Expected result uncertainty

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Expected result uncertainty, as defined by the United States Environmental Protection Agency via its SEDD Specification Version 5.2, is "the estimated amount, expressed as a symmetric interval centered on the expected result, by which the expected result may differ from the true value due to all effects related to analysis by the laboratory."[1]


  1. U.S. Environmental Protection Agency (March 2019). "Appendix A. Data Element Dictionary (DED)" (PDF). SEDD Specification Version 5.2. https://www.epa.gov/sites/default/files/2019-05/documents/sedd_spec_v5-2-march_2019_508.pdf. Retrieved 22 September 2022.