Gravetter, Frederick J. Statistics for the behavioral sciences / Frederick H. Gravetter, Larry B. Wallnau. - 6th ed. - Australia : Thomson Wadsworth, c2004. - xv, 746p. : col. ill. ; 25 cm. Bibliography : p. 737 - 738. Includes index. ISBN: 0534602460 Subjects--Topical Terms: Psychology--Statistical methods.Educational statistics LC Class. No.: BF39 / G78 2004