Statistical methods in education and psychology / Albert K. Kurtz, Samuel T. Mayo. Kurtz, Albert K. (Albert Kenneth), 1904- Mayo, Samuel Turberville, author. Educational statistics. Educational tests and measurements. LB2846 .K88 370.182 KUS Includes bibliographical references and index. New York : Springer-Verlag, c1979. c1979. 1979 Text xiv, 538 p. : eng