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Added Value of Subscores and Hypothesis Testing

Author

Listed:
  • Sandip Sinharay

    (Educational Testing Service)

Abstract

The value-added method of Haberman is arguably one of the most popular methods to evaluate the quality of subscores. According to the method, a subscore has added value if the reliability of the subscore is larger than a quantity referred to as the proportional reduction in mean squared error of the total score. This article shows how well-known statistical tests can be used to determine the added value of subscores and augmented subscores. The usefulness of the suggested tests is demonstrated using two operational data sets.

Suggested Citation

  • Sandip Sinharay, 2019. "Added Value of Subscores and Hypothesis Testing," Journal of Educational and Behavioral Statistics, , vol. 44(1), pages 25-44, February.
    • Handle: RePEc:sae:jedbes:v:44:y:2019:i:1:p:25-44
    DOI: 10.3102/1076998618788862
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