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A note on the linearly weighted kappa coefficient for ordinal scales. (English) Zbl 1220.62172
Summary: A frequent criticism formulated against the use of weighted kappa coefficients is that the weights are arbitrarily defined. We show that using linear weights for a \(K\)-ordinal scale is equivalent to deriving a kappa coefficient from \(K-1\) embedded \(2\times 2\) tables.

MSC:
62P99 Applications of statistics
62H17 Contingency tables
62P15 Applications of statistics to psychology
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