A Perspective on the Construction of Nonsymmetric Uncertainty Intervals

[+] Author and Article Information
Paul K. Maciejewski

University of Connecticut, Department of Mechanical Engineering, 191 Auditorium Road, J-139, Storrs, CT 06269-3139

J. Fluids Eng 119(4), 804-807 (Dec 01, 1997) (4 pages) doi:10.1115/1.2819501 History: Received March 18, 1994; Revised July 17, 1997; Online January 22, 2008


This paper presents a new method for constructing nonsymmetric uncertainty intervals, one that is based on estimates of “expected values” and “variances” associated with deterministic errors that one constructs from estimates of “upper bias limits” and “lower bias limits” for measured variables. On the assumption that upper bias limits and lower bias limits specified by the user correspond to 95 percent confidence intervals for normally distributed deterministic errors, the uncertainty intervals determined by the new method reduce to approximate 95 percent confidence intervals for the true value of the measured variables.

Copyright © 1997 by The American Society of Mechanical Engineers
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