Keller, Gerald. Statistics for management and economics : a systematic approach / Gerald Keller, Brian Warrack, Henry Bartel. - 2nd ed. - Belmont, Calif. : Wadsworth, c1990. - xxiv, 1050, 45, 13 p. : col. ill. ; 24 cm. Includes index. Includes bibliographical references. ISBN: 0534126782 Subjects--Topical Terms: Management--Statistical methods.Economics--Statistical methods. LC Class. No.: HD30.215 / .K45 1990