Further comments on the (miss-)use of r for testing the linearity of calibration functions

The earlier comments of Dr Huber on the incorrect use of correlation coefficient as a test of linearity of calibration are supported with examples of curved relations leading to apparently acceptable values of r. The discussion of proper statistics that should be used is continued. It is noted that...

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Bibliographic Details
Published in:Accreditation and quality assurance 2005-06, Vol.10 (6), p.300-301
Main Author: Hibbert, D. B.
Format: Article
Language:English
Subjects:
Calibration
Correlation coefficients
Hypotheses
Linearity
Measuring instruments
Random variables
Standard deviation
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Summary:The earlier comments of Dr Huber on the incorrect use of correlation coefficient as a test of linearity of calibration are supported with examples of curved relations leading to apparently acceptable values of r. The discussion of proper statistics that should be used is continued. It is noted that many journals do not allow correlation coefficients to be quoted in defense of linear calibrations.
ISSN:0949-1775
1432-0517
DOI:10.1007/s00769-005-0919-1