William Gemmell Cochran

William G. Cochran
William G. Cochran
	Cochran in 1952
Born	July 15, 1909; Rutherglen, South Lanarkshire, Scotland
Died	March 29, 1980 (aged 70); Orleans, Massachusetts
Education	University of Glasgow; University of Cambridge;
Known for	Cochran's C test; Cochran's Q test; Cochran's theorem; Cochran–Mantel–Haenszel statistics;
	Scientific career
Fields	Statistics
Institutions	Rothamsted Experimental Station; Iowa State University; North Carolina State University; Johns Hopkins University; Harvard University;
Academic advisors	John Wishart
Doctoral students	Helen Abbey; T. A. Bancroft; Ralph B. D'Agostino; Donald Rubin; Calvin Zippin; Walter T. Federer;

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.