Statistical adjustments when comparing preexisting groups
By: Frederic M. Lord
Series: Research bulletin -- 67; Research bulletin (Educational Testing Service) -- RB-68-67
Publisher: Educational Testing Service
Published: 1968
Place of publication: Princeton, New Jersey
Language: eng
Subjects: Educational tests and measurements
Notes: This bulletin is a draft for interoffice circulation. It is automatically superseded upon formal publication of the material.--T.p.

"December 1968."

Includes bibliographical references (leaf 4).