PROFICIENCY TEST WITH THE INFORMATION OF UNCERTAINTY: ANALYSIS WITH THE MAXIMUM LIKELIHOOD METHOD

Katsuhiro Shirono, Masanori Shiro, Hideyuki Tanaka, Kensei Ehara
Abstract:
The analysis methods of proficiency test (PT) data, when the uncertainty information is given, and a reference laboratory does not exist, are investigated in this study. Mainly two methods are characterized; the analyses with (i) the robust method which we developed, and (ii) the maximum likelihood estimation. Consequently, it is confirmed that the applicability latter approach is validated only when some conditions are satisfied. Therefore, the former analysis is basically recommended.
Keywords:
proficiency test, ISO 13528, E_n number, measurement uncertainty, posterior predictive check
Download:
IMEKO-WC-2015-TC21-413.pdf
DOI:
-
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
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