Introduction to statistical analysis [by] Wilfrid J. Dixon [and] Frank J. Massey. Statistical analysis. Dixon, Wilfrid Joseph, 1915- Massey, Frank Jones, author. Statistics. HA29 .D57 1951 519.9 DII Includes bibliographies. New York : McGraw-Hill, c1951. c1951. 1951 Text x, 370 p. eng