Some supporting evidence for Lord's guideline for estimating 'c'
By: David Thissen and Howard Wainer
Contributors: Wainer, Howard
Series: Program statistics research technical report no -- 85-57; Research report -- RR-85-15; Research report (Educational Testing Service) -- RR-85-15; Program statistics research technical report -- no. 84-57
Publisher: Educational Testing Service
Published: 1985
Place of publication: Princeton, NJ
Language: eng
Notes: "May 1985."

Includes bibliographical references (p. 5).