Welkowitz, Joan. , Introductory statistics for the behavioral sciences by Joan Welkowitz and Barry H. Cohen - 6th ed. - New Jersey: Wiley, c2006. . - xxiii, 515 p. : ill; 24cm. - - . Includes bibliographical references and index. ISBN: 9780471735472 = Nat. Bib. No.: Nat. Bib. Agency Control No.: Subjects--Meeting Names: Subjects--Index Terms: Probabilities & applied mathematics Social sciences -- Statistical methods. Psychometrics. Sociology -- Statistical methods. Educational statistics. LC Class. No.: / Dewey Class. No.: 519.50243 WEL