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|Author(s):||Raghu N. Kacker; James F. Lawrence;|
|Title:||Trapezoidal and Triangular Distributions for Type B Evaluation of Standard Uncertainty|
|Published:||February 26, 2007|
|Abstract:||A Type B standard uncertainty is determined from a probability distribution specified by scientific judgment based on all available information. The ISO-GUM discusses symmetric distributions only. Sometimes an asymmetric distribution is needed. We describe a trapezoidal distribution that may be asymmetric. Triangular and rectangular distributions are special cases of trapezoidal distribution. Then we discuss how a trapezoidal distribution may be used to determine an asymmetric correction for bias and its associated standard uncertainty.|
|Pages:||pp. 117 - 127|
|Keywords:||ISO-GUM,measurement uncertainty,rectangular distribution uncertainty,variance components|
|PDF version:||Click here to retrieve PDF version of paper (206KB)|