ANALYSIS OF INTERLABORATORY COMPARISON DATA USING T-DISTRIBUTIONS

Alistair B. Forbes
Abstract:
This paper discusses the analysis of interlaboratory comparison data where there may be some doubt about the validity of the uncertainty statements. The analysis of repeated measurements drawn from a Gaussian distribution with unknown variance provides a model for the posterior adjustment of the input distribution associated with each participant. Importantly, the shapes of the input distributions are adjusted, not just their standard deviations.
Keywords:
Bayesian inference, interlaboratory comparisons, t-distributions, uncertainty evaluation
Download:
IMEKO-WC-2015-TC21-391.pdf
DOI:
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Event details
Event name:
XXI IMEKO World Congress
Title:

Measurement in Research and Industry

Place:
Prague, CZECH REPUBLIC
Time:
30 August 2015 - 04 September 2015