Abstract
Three rules useful in census and survey data processing to determine whether a coder, typist, or keypuncher is meeting quality standards are presented. Both statistical properties and practical aspects of the rules are discussed. Tables are given which facilitate application.
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George Minton
Mr. Minton is a mathematical statistician currently assigned to the Statistical Research Division, U. S. Bureau of the Census. Opinions expressed here are those of the author and do not necessarily represent those of the Bureau of the Census.