A simulation-Monte Carlo study of item difficulty measures delta and D.6
By: Ledyard R. Tucker
Series: Research report -- RR-81-6; Research report (Educational Testing Service) -- RR-81-6
Publisher: Educational Testing Service
Published: 1981
Place of publication: Princeton, N.J
Language: eng
Number of pages: 29
Subjects: Examinations; Design and construction
Notes: "April 1981."

Includes bibliographical references (p. 13).