Gravetter, Frederick J. Statistics for the behavioral sciences / Frederick J Gravetter, Larry B. Wallnau. - 8th ed. - Australia ; Belmont, CA : Wadsworth, c2009 - xxi, 783 p. : ill. ; 26 cm. Original: E-C7/00028 (289.212 đ); Copy: E-C7/00029-30 Includes bibliographical references (p. 774-777) and index. ISBN: 9780495602941 Subjects--Topical Terms: Educational statistics.Psychology--Statistical methods. Subjects--Index Terms: Phương pháp thống kê Statistics Tâm lý học Toán học thống kê Dewey Class. No.: 519.5024/3