Statistics : principles and methods / Richard A. Johnson, Gouri K. Bhattacharyya. Johnson, Richard A. (Richard Arnold), 1937- Bhattacharyya, Gouri K., 1940- Statistics. QA276.12 .J63 1992 519.5 20 JOS Includes index. New York : Wiley, c1992. c1992. 1992 Text xvii, 686 p. : eng Wiley series in probability and mathematical statistics. Probability and mathematical statistics