Statistics in psychology and educati / Henry E. Garrett. With an introd. by R. S. Woodworth. Garrett, Henry E. (Henry Edward), 1894-1973. Psychometrics. Educational statistics. HA33 .G3 1966 310 GAS Bibliography: p. 485. New York : McKay , 1966. 1966. 1966 Text xii, 491 p. : eng