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definitions of repeatability and reproducibilty

From: <lsr@nist.gov>
Date: Thu, 23 Oct 2003 12:59:14 -0400
Message-ID: <1066928354.3f9808e26d45b@imp.nist.gov>
To: www-qa-wg@w3.org

The real definitions are from  ISO 5725-1:1994/Technical Corrigendum 1,
Published 1998-02-15, "Accuracy (trueness and precision) of measurement
methods and results  Part 1: General principles and definitions" and ISO
5725-2:1994, "Accuracy (trueness and precision) of measurement methods and
results  Part 2: Basic method for the determination of repeatability and
reproducibility of a standard measurement method."
"3.13 repeatability:  Precision under repeatability conditions.

  3.14 repeatability conditions: Conditions where independent test results
are obtained with the same method on identical test items in the same
laboratory by the same operator using the same equipment within short
intervals of time.

3.17 reproducibility:  Precision under reproducibility conditions.

3.18 reproducibility conditions: Conditions where test results are obtained
with the same method on identical test items in different laboratories with
different operators using different equipment."


Received on Thursday, 23 October 2003 12:59:28 GMT

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