Ledyard R. Tucker

Ledyard R Tucker (19 September 1910 Glenwood Springs, Colorado – 16 August 2004 Savoy, Illinois) was an American mathematician who specialized in statistics and psychometrics. His Ph.D. advisor at the University of Chicago was Louis Leon Thurstone. Tucker is best known for his Tucker decomposition and Tucker–Koopman–Linn model. He is credited with the invention of Angoff method.