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Essentials of expressing measurement uncertainty
This is a brief summary of the method of evaluating and expressing uncertainty in measurement adopted widely by U.S. industry, companies in other countries, NIST, its sister national metrology institutes throughout the world, and many organizations worldwide. These "essentials" are adapted from NIST Technical Note 1297 (TN 1297), prepared by B.N. Taylor and C.E. Kuyatt and entitled Guidelines for Evaluating and Expressing the Uncertainty of NIST Measurement Results, which in turn is based on the comprehensive International Organization for Standardization (ISO) Guide to the Expression of Uncertainty in Measurement. Users requiring more detailed information may access TN 1297 online, or if a comprehensive discussion is desired, they may purchase the ISO Guide.More info of this article can be found on the web at:
http://physics.nist.gov/cuu/Uncertainty/index.html