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Accreditation and Quality Assurance

, Volume 11, Issue 3, pp 146–152 | Cite as

In defence of the correlation coefficient

  • Stephen L. R. Ellison
Discussion Forum

Abstract

The relationship between calibrated range, residual standard deviation and correlation coefficient r is discussed. It is shown that in typical chemical calibration applications with appropriately distributed calibration points (particularly, with range comparable to mean and with approximately even or with ‘successive dilution’ spacing), the linear correlation coefficient has valid application as a routine criterion for acceptable fit if used with due care.

Keywords

Correlation coefficient Linearity 

References

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Copyright information

© Springer-Verlag 2006

Authors and Affiliations

  1. 1.LGC LimitedTeddingtonEngland

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