Examining the Stability of Angoff's Delta Item Bias Statistic Using the Bootstrap.

Harris, Deborah J.; Kolen, Michael J.

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Peer reviewed

ERIC Number: EJ393079

Record Type: Journal

Publication Date: 1989

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Examining the Stability of Angoff's Delta Item Bias Statistic Using the Bootstrap.

Harris, Deborah J.; Kolen, Michael J.

Educational and Psychological Measurement, v49 n1 p81-87 Spr 1989

With bootstrap methodology, the stability of the Angoff delta item bias index was investigated. Data from item responses of 400 Black and 400 White fifth-grade students taking the Iowa Tests of Basic Skills indicated that the Angoff delta statistic had only moderate stability. (SLD)

Descriptors: Black Students, Elementary Education, Elementary School Students, Estimation (Mathematics), Grade 5, Item Analysis, Language Usage, Responses, Statistical Analysis, Test Bias, Test Items, Vocabulary Skills, White Students

Publication Type: Journal Articles; Reports - Research

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Audience: N/A

Language: English

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