Samuel Greenhouse

Samuel W. Greenhouse (January 13, 1918 – September 29, 2000) was an American statistician who helped to pioneer the use of statistics in epidemiology. With Seymour Geisser, he developed the Greenhouse–Geisser correction, which is now widely used in the analysis of variance to correct for violations of the assumption of compound symmetry. In 1954, Greenhouse became head of the theoretical statistics and applied mathematics section at the National Institute of Mental Health. He became chief of the National Institute of Child Health and Human Development's epidemiology and biometry branch in 1966, and continued to work there until 1974, when he joined the faculty of George Washington University (GWU). He chaired the GWU department of statistics twice: in 1976–1979 and in 1985–1986. He retired from the GWU faculty in 1988, whereupon he was named an emeritus professor there.