Statistics for management and economics / Gerald Keller, Brian Warrack, Henry Bartel. Keller, Gerald. Warrack, Brian. Bartel, Henry. Management Statistical methods. Economics Statistical methods. 658.4033 20 KES Includes bibliographical references and index. Belmont, Calif. : Duxbury Press, c1994. c1994. 1994 Text xxiii, 1016, 56 p. : eng