J. de Mast
W.N. extern van Wieringen
- Measurement system analysis for categorical data: Agreement and kappa-type indices
- Journal of Quality Technology
- Volume | Issue number
- 39 | 3
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Korteweg-de Vries Institute for Mathematics (KdVI)
The standard method for the assessment of the precision of measurement gauges -- the gauge R&R method -- is not applicable for measurement systems that measure on a nominal scale. For nominal measurements the agreement method can be used, which expresses precision in the form of an index named \kappa. This paper aims to provide a consistent framework for the kappa method, based on statistical modeling. The defined probability models are used to study the statistical properties of proposed estimators. Various alternative forms of \kappa are discussed, as well as their relationship to the so-called paradoxes of kappa.
Key words: nominal data; attribute data; gauge capability; precision; reproducibility; kappa coefficient.
If you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library, or send a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible.