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Can any one please tell me what kappa calculates. I know how kappa is calculated. But what does the numerator and denominator in the kappa measure denote or trying to say.
In signal Detection, we calculated the distance of disagreement 'd'. Why do we use 5.15 SD to calculate %GRR. What does 5.15 mean.

In signal Detection, we calculated the distance of disagreement 'd'. Why do we use 5.15 SD to calculate %GRR. What does 5.15 mean.

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