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Robinson's Coefficient of Agreement—A Critique

Published online by Cambridge University Press:  25 January 2017

Donald J. Lehmer*
Affiliation:
MRBS, Smithsonian Institution, Lincoln, Nebraska

Extract

Despite a firm conviction that statistical analyses have a definite place in archaeological interpretations, I want to register a protest against the Coefficient of Agreement proposed by W. S. Robinson (American Antiquity, Vol. 16, No. 4, pp. 293-301, 1951). Robinson's coefficient is offered as a measure of the degree of similarity between two collections of sherd material. It is arrived at by adding the differences between the percentages of each type of sherd in the two collections and subtracting this sum from 200.

Type
Facts and Comments
Copyright
Copyright © The Society for American Archaeology 1951

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