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ERIC Number: EJ309353
Record Type: CIJE
Publication Date: 1984
Pages: N/A
Abstractor: N/A
Reference Count: 0
ISBN: N/A
ISSN: N/A
Some Relationships between the Binomial Error Model and Classical Test Theory.
Feldt, Leonard S.
Educational and Psychological Measurement, v44 n4 p883-91 Win 1984
The binomial error model includes form-to-form difficulty differences as error variance and leads to Ruder-Richardson formula 21 as an estimate of reliability. If the form-to-form component is removed from the estimate of error variance, the binomial model leads to KR 20 as the reliability estimate. (Author/BW)
Descriptors: Achievement Tests, Difficulty Level, Error of Measurement, Mathematical Formulas, Mathematical Models, Test Items, Test Reliability, Test Theory
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A
Identifiers: Binomial Error Model; Kuder Richardson Reliability Formulas; Parallel Forms Reliability