Encyclopaedia of Statistical Sciences: Classification/Eye Estimate v.2

Editorial Board, Chairman: Norman L. Johnson Emeritus Professor of Statistics, University of North Carolina at Chapel Hill Members of the Advisory Board: Stephen E. Fienberg Maurice Falk Professor of Statistics Carnegie Mellon University Nancy Reid Professor of Statistics University of Toronto D. Michael Titterington Professor of Statistics University of Glasgow Geoffrey S. Watson Emeritus Professor of Statistics Princeton University Editorial Assistant: Sheila Crain Southern Methodist University About the editors SAMUEL KOTZ, PhD, is currently a visiting scholar at The George Washington University, in Washington, D.C. Dr. Kotz received his PhD in mathematical statistics from Cornell University and has held distinguished visiting positions at Bucknell University, Bowling Green State University, Tel Aviv University, University of Guelph, Harbin Institute of Technology (China), Luleaversity (Sweden), and Copenhagen University. He was awarded honorary doctorates from the Harbin Institute of Technology in 1987, the University of Athens (Greece) in 1995, and from Bowling Green State University in 1996. In addition to serving as coordinating editor of Journal of Statistical Planning and Inference, Dr. Kotz is the coauthor with Dr. N. L. Johnson of the recently published Leading Personalities in Statistical Sciences, the classic four--volume Distributions in Statistics (now in its second edition), Urn Models and Applications, Symmetric Multivariate and Related Distributions, Educated Guessing, Process Capability Indices, Recent Results in Information Theory, several Russian--English technical dictionaries, and more than 100 research papers in the fields of statistics, probability theory, and quality control. CAMPBELL B. READ, PhD, is Professor of Statistical Science at Southern Methodist University, in Dallas, Texas. He studied mathematics at the University of Cambridge, in England, and obtained a PhD in mathematical statistics from the University of North Carolina at Chapel Hill. He is the author of several research papers in sequential analysis, properties of statistical distributions, and contingency table analysis, and is coauthor of the Handbook of the Normal Distribution. He is an elected member of the International Statistical Institute, has served on the faculty of the American University of Beirut, Lebanon, and was a visiting scholar in 1987 at the University of Cambridge. DAVID L. BANKS, PhD, is a mathematical statistician at the National Institute of Standards and Technology (NIST), in Gaithersburg, Maryland. Dr. Banks received his PhD in statistics from Virginia Polytechnic Institute and served on the faculty of Carnegie Mellon University from 1987 to 1997. He has held visiting positions at the University of California at Berkeley and the University of Cambridge.