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Measures of Agreement Versus Measures of Prediction Accuracy

Author(s):
Haberman, Shelby J.
Publication Year:
2019
Report Number:
RR-19-20
Source:
ETS Research Report
Document Type:
Report
Page Count:
23
Subject/Key Words:
Predictive Measurement, Prediction, Agreement, Kappa Measures, Lambda Measures, Coefficient of Determination, Proportional Reduction in Error, Discrepancy Measures

Abstract

Measures of agreement are compared to measures of prediction accuracy within a general context. Differences in appropriate use are emphasized, and approaches are examined for both numerical and nominal variables. General estimation methods are developed, and their large‐sample properties are compared.

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