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The scores were compared for reliability and controlled for chance agreement by using κ statistics.
It is designed for categorical judgments and corrects a simple agreement rate for the rate of chance agreement.
These can then be used in weighted accuracy measures, either direct measures of agreement or measures that account for chance agreement, such as the tau index.
Hypothetical probability of chance agreement.
The chance agreement has been determined on the basis of chance agreement (Sum of the product of row and column totals for each class).
The kappa statistics calculation in terms of calculation of chance agreement comes out to be 0.88.
Agreement, κ, is the proportion of agreement between the judges after chance agreement has been removed.
The kappa coefficient has been used to address the difference between the actual and chance agreement.
However, she added that there was every chance agreement could be reached.
The value of κ is bounded on [– 1,+1] with zero indicating that observed agreement equals chance agreement.
The AC1 statistic (Gwet 2001), or first-order agreement coefficient, corrects the overall percentage agreement for chance agreement.
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