An extension of the rulon formula for test reliability
Subtitle: the case of correlated true and error components of scores
By: Richard H. Williams and Donald W. Zimmerman
Contributors: Zimmerman, Donald W.
Series: Research bulletin / Educational Testing Service -- 1966-55; Research bulletin (Educational Testing Service) -- RB-66-55
Publisher: Educational Testing Service
Published: 1966
Place of publication: Princeton, New Jersey
Language: eng
Subjects: Educational tests and measurements; Validity
Notes: "December 1966."

This bulletin is a draft for interoffice circulation. It is automatically superseded upon formal publication of the material.--T.p.

Includes bibliographical references (leaf 7).