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Gertrude Mary Cox was an American statistician and founder of the department of Experimental Statistics at North Carolina State University. She was later appointed director of both the Institute of Statistics of the Consolidated University of North Carolina and the Statistics Research Division of North Carolina State University. Her most important and influential research dealt with experimental design; In 1950 she published the book Experimental Designs, on the subject with W. G. Cochran, which became the major reference work on the design of experiments for statisticians for years afterwards. In 1949 Cox became the first woman elected into the International Statistical Institute and in 1956 was President of the American Statistical Association.