NDLI: Identification and Handling of Discrepant Measurements in Key Comparisons

Content Provider	Springer Nature Link
Author	Nielsen, L.
Copyright Year	2003
Abstract	In a key comparison one or several measurement objects are circulated among a number of laboratories, each of which measures the quantities represented by the objects. In order to compare the measurement results obtained by the participating laboratories, the values represented by the circulated objects have to be established. These values, known as the key comparison reference values, and their associated uncertainties can easily be calculated by the method of least squares from the measurement results provided by the participating laboratories. Since this method requires that the measurement results be mutually consistent, a hypothesis that sometimes has to be rejected at a reasonable level of significance, a procedure for identification and handling of discrepant measurements is needed. In this paper such a procedure is suggested. It is demonstrated that although a key comparison reference value is attracted to a discrepant measurement result that has an uncertainty much smaller than the remaining results, the suggested procedure is able to identify this discrepant result. It is also demonstrated that the exclusion of a discrepant measurement result from the calculation of the reference values does not amplify the discrepancy of that result. As the discrepant result is not excluded from the comparison itself, the exclusion of the result in the calculation of the reference values should therefore be uncontroversial.
Starting Page	513
Ending Page	522
Page Count	10
File Format	PDF
ISSN	05431972
Journal	Measurement Techniques
Volume Number	46
Issue Number	5
e-ISSN	15738906
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2003-01-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Analytical Chemistry Physical Chemistry Characterization and Evaluation Materials Measurement Science, Instrumentation
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Instrumentation

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Results from Key International Comparisons in Photometry

Key comparisons CCEM.RF-K-20 in the area of electric field strength measurements

Determining Reference Values and Degrees of Equivalence in Key Comparisons

The Results of the CCQM-K9 Key International Comparisons of National Standards of pH Measurements

Results from international comparisons of measurements on short distances

International Key Comparisons in the Area of Measurements of the Power of Ultrasonic Radiation in Water

Role of Key Comparisons in Assurance of the Uniformity of Measurements in the Field of Vibration Measurements

Measuring the Specific Activity of 238Pu in Solution for International Key Comparisons

Physical measurements in earthquake prediction

Identification and Handling of Discrepant Measurements in Key Comparisons

Similar Documents

Results from Key International Comparisons in Photometry

Key comparisons CCEM.RF-K-20 in the area of electric field strength measurements

Determining Reference Values and Degrees of Equivalence in Key Comparisons

The Results of the CCQM-K9 Key International Comparisons of National Standards of pH Measurements

Results from international comparisons of measurements on short distances

International Key Comparisons in the Area of Measurements of the Power of Ultrasonic Radiation in Water

Role of Key Comparisons in Assurance of the Uniformity of Measurements in the Field of Vibration Measurements

Measuring the Specific Activity of 238Pu in Solution for International Key Comparisons

Physical measurements in earthquake prediction

Identification and Handling of Discrepant Measurements in Key Comparisons