ASTM D6300-07

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An American National Standard
Designation:D6300–07
Standard Practice for
Determination of Precision and Bias Data for Use in Test
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Methods for Petroleum Products and Lubricants
This standard is issued under the fixed designation D 6300; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
INTRODUCTION
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Both Research Report RR:D02–1007, Manual on Determining Precision Data for ASTM Methods
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on Petroleum Products and Lubricants and the ISO 4259, benefitted greatly from more than 50 years
of collaboration betweenASTM and the Institute of Petroleum (IP) in the UK. The more recent work
was documented by the IP and has become ISO 4259.
ISO 4259 encompasses both the determination of precision and the application of such precision
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data. In effect, it combines the type of information in RR:D02–1007 regarding the determination of
the precision estimates and the type of information in Practice D 3244 for the utilization of test data.
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The following practice, intended to replace RR:D02–1007, differs slightly from related portions of
the ISO standard. This new practice is consistent with the computer software, ADJD6300 D2PP,
Version 4.43, Determination of Precision and Bias Data for Use in Test Methods for Petroleum
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Products.
1. Scope 2. Referenced Documents
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1.1 This practice covers the necessary preparations and 2.1 ASTM Standards:
planning for the conduct of interlaboratory programs for the D 123 Terminology Relating to Textiles
development of estimates of precision (determinability, repeat- D 3244 Practice for Utilization of Test Data to Determine
ability, and reproducibility) and of bias (absolute and relative), Conformance with Specifications
and further presents the standard phraseology for incorporating E29 Practice for Using Significant Digits in Test Data to
such information into standard test methods. Determine Conformance with Specifications
1.2 This practice is generally limited to homogeneous prod- E 456 Terminology Relating to Quality and Statistics
ucts with which serious sampling problems do not normally E 691 Practice for Conducting an Interlaboratory Study to
arise. Determine the Precision of a Test Method
1.3 This practice may not be suitable for solid or semisolid 2.2 ISO Standards:
products such as petroleum coke, industrial pitches, paraffin ISO 4259 Petroleum Products-Determination and Applica-
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waxes, greases, or solid lubricants when the heterogeneous tion of Precision Data in Relation to Methods of Test
properties of the substances create sampling problems. In such 2.3 ASTM Adjuncts:
instances, use Practice E 691 or consult a trained statistician. ADJD6300 D2PP, Version 4.43, Determination of Preci-
1.4 A software program (ADJD6300) performs the neces- sion and Bias Data for Use in Test Methods for Petroleum
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sary computations prescribed by this practice. Products
3. Terminology
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This practice is under the jurisdiction of ASTM Committee D02 on Petroleum
3.1 Definitions:
Products and Lubricants and is the direct responsibility of Subcommittee D02.94 on
Coordinating Subcommittee on Quality Assurance and Statistics.
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Current edition approved July 1, 2007. Published September 2007. Originally For referenced ASTM standards, visit the ASTM website, www.astm.org, or
approved in 1998. Last previous edition approved in 2006 as D 6300–06. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
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Supporting data have been filed at ASTM International Headquarters and may Standards volume information, refer to the standard’s Document Summary page on
be obtained by requesting Research Report RR:D02–1007. the ASTM website.
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Available from ASTM International Headquarters. Order Adjunct No. Available from International Organization for Standardization, 1 rue de
ADJD6300. Varembé, Case postale 56, CH-1211 Geneva 20, Switzerland.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
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D6300–07
3.1.1 analysis of variance (ANOVA), n—a procedure for to the definitions of each of these terms for greater detail.
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dividing the total variation of a set of data into two or more RR:D02–1007
parts, one of which estimates the error due to selecting and
3.1.10 random error, n—the chance variation encountered
testing specimens and the other part(s) possible sources of
in all test work despite the closest control of variables.
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added variation. D 123
RR:D02–1007
3.1.2 bias, n—the difference between the population mean
3.1.11 repeatability, n—the quantitative expression of t
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