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Removing Measurement Error in Assessing Conformance to Specifications

Summary: (This paper has been selected for presentation at the Journal of Quality Technology session of the 26th Annual Fall Technical Conference of the Chemical Division of the American Society for Quality Control and the Section of Physical and Engineering Sciences in Atlantic City, New Jersey, October 21-22, 1982.)A method is presented for determining whether a sufficient proportion of a product meets specifications when the available data are subject to reading error. The method is illustrated by an application in which a producer is required to verify that at least 95 percent of the containers of a product provide the net weight indicated on the container label. In this example, errors in reading the filled container weights and random variation in the empty container weights might at first lead one to conclude incorrectly that the proportion of containers that meet the requirement is insufficient.

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  • Topics: Statistics, Product Development and Recall
  • Keywords: Statistics,Calibration,Error,Measurement error,Product development
  • Author: Hahn, Gerald J.
  • Journal: Journal of Quality Technology