The Relative Difficulty Ratio-A Test and Item Index.

Frisbie, David A.

Notes FAQ Contact Us

Back to results

Peer reviewed

ERIC Number: EJ249410

Record Type: Journal

Publication Date: 1981

Pages: N/A

Abstractor: N/A

ISBN: N/A

ISSN: N/A

EISSN: N/A

Available Date: N/A

The Relative Difficulty Ratio-A Test and Item Index.

Frisbie, David A.

Educational and Psychological Measurement, v41 n2 p333-39 Sum 1981

The Relative Difficulty Ratio (RDR) was developed as an index of test or item difficulty for use when raw score means or item p-values are not directly comparable because of chance score differences. Computational RDR are described. Applications of the RDR at both the test and item level are illustrated. (Author/BW)

Descriptors: Difficulty Level, Item Analysis, Mathematical Formulas, Test Items

Publication Type: Journal Articles; Reports - Evaluative

Education Level: N/A

Audience: N/A

Language: English

Sponsor: N/A

Authoring Institution: N/A

Grant or Contract Numbers: N/A

Author Affiliations: N/A