William Gemmell Cochran

William G. Cochran
Born	July 15, 1909 Rutherglen
Died	March 29, 1980 (aged 70) Orleans, Massachusetts
Nationality	American
Fields	Statistics
Alma mater	University of Glasgow
Academic advisors	John Wishart
Doctoral students	Samprit Chatterjee Ralph D'Agostino Donald Rubin
Known for	Cochran's C test Cochran's Q test Cochran's theorem Cochran–Mantel–Haenszel statistics

William Gemmell Cochran (15 July 1909 – 29 March 1980) was a prominent statistician. He was born in Scotland but spent most of his life in the United States.

Cochran studied mathematics at the University of Glasgow and the University of Cambridge. He worked at Rothamsted Experimental Station from 1934 to 1939, when he moved to the United States. There he helped establish several departments of statistics. His longest spell in any one university was at Harvard, which he joined in 1957 and from which he retired in 1976.

Writings

Cochran wrote many articles and books. His books became standard texts:

• Experimental Designs (with Gertrude Mary Cox) 1950 ISBN 0-471-54567-8
• Cochran, William G. (1977). Sampling Techniques (Third ed.). Wiley. ISBN 0-471-16240-X.
• Statistical Methods Applied to Experiments in Agriculture and Biology by George W. Snedecor (Cochran contributed from the fifth (1956) edition) ISBN 0-8138-1561-4
• Planning and Analysis of Observational Studies (edited by Lincoln E. Moses and Frederick Mosteller) 1983.

External links

• Brief biography
• ASA biography
• Morris Hansen and Frederick Mosteller (1987) William Gemmell Cochran NAS Biographical Memoirs V.56
• Yates, F. (1982). "Obituary: William Gemmell Cochran, 1909-1980". Journal of the Royal Statistical Society, Series A. 145 (4): 521–523. JSTOR 2982120.
• William Gemmell Cochran at the Mathematics Genealogy Project
• National Academy of Sciences Biographical Memoir
• "Designing Clinical Trials" (1961; Evaluation of Drug Therapy)