© 1973 by Biometrika Trust
Studies in the History of Probability and Statistics. XXXII
Laplace, Fisher, and the discovery of the concept of sufficiency
University of Wisconsin Madison
R. A. Fisher's 1920 discovery of sufficiency while studying competing estimators of standard deviations is discussed. It is shown how Laplace completed a similar investigation a century earlier attempting to improve upon least squares, yet did not abstract the concept.
Key Words: Laplace Fisher Sufficiency History of statistics History of estimation Least squares
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