Glass, Gene V., 1940- <br/><br/>
Statistical methods in education and psychology/ 
Gene V. Glass, Kenneth D. Hopkins. 
 - 2nd edition. 
 - Englewood Cliffs, N.J.:  Prentice-Hall,  1984. 
 - xiii, 578 pages:    illustrations;   25 cm. 
<br/><br/>Includes indexes. Bibliography: p. 557-566. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Educational statistics.<br/>Psychometrics.