ASTM-D6300 2008

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D6300-08 Standard Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants

Published By	Publication Date	Number of Pages
ASTM	2008	33

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Categories: 03.120.20 - Product and company certification. Conformity assessment, ASTM

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Description

1.1 This practice covers the necessary preparations and planning for the conduct of interlaboratory programs for the development of estimates of precision (determinability, repeatability, and reproducibility) and of bias (absolute and relative), and further presents the standard phraseology for incorporating such information into standard test methods.

1.2 This practice is generally limited to homogeneous products with which serious sampling problems do not normally arise.

1.3 This practice may not be suitable for solid or semisolid products such as petroleum coke, industrial pitches, paraffin waxes, greases, or solid lubricants when the heterogeneous properties of the substances create sampling problems. In such instances, use Practice E 691 or consult a trained statistician.

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PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
3	Summary of Practice Significance and Use Stages in Planning of an Interlaboratory Test Program for the Determination of the Precision of a Test Method TABLE 1
4	TABLE 2
5	FIG. 1
6	Inspection of Interlaboratory Results for Uniformity and for Outliers
7	TABLE 3 TABLE 4
8	TABLE 5
9	TABLE 6 TABLE 7 TABLE 8
10	Analysis of Variance and Calculation of Precision Estimates TABLE 9 TABLE 10
11	TABLE 11 TABLE 12
13	TABLE 13
14	Keywords A1. NOTATION AND TESTS A1.1 Notation Used Throughout A1.2 Array of Duplicate Results from Each of L Laboratories on S Samples and Corresponding Means mj A1.3 Array of Sums of Duplicate Results, of Laboratory Totals hi and Sample Totals gj TABLE A1.1 TABLE A1.2
15	A1.5 Cochran’s Test A1.6 Hawkins’ Test TABLE A1.3
16	A1.7 Variance Ratio Test (F-Test) TABLE A1.4
17	TABLE A1.5 TABLE A1.6
18	TABLE A1.7 TABLE A1.8 TABLE A1.9
19	A2. EXAMPLE RESULTS OF TEST FOR DETERMINATION OF BROMINE NUMBER AND STATISTICAL TABLES A2.1 Bromine Number for Low Boiling Samples A2.2 Cube Root of Bromine Number for Low Boiling Samples A2.3 Critical 1 % Values of Cochran’s Criterion for n Variance Estimates and v Degrees of Freedom A2.4 Critical Values of Hawkins’ 1 % Outlier Test for n = 3 to 50 and v = 0 to 200 A2.5 Critical Values of t A2.6 Critical Values of F6 TABLE A2.1
20	TABLE A2.2 TABLE A2.3
21	A3. TYPES OF DEPENDENCE AND CORRESPONDING TRANSFORMATIONS ( A3.1 Types of Dependence A3.2 Transformation Procedure TABLE A2.4 TABLE A2.5
22	TABLE A3.1 FIG. A3.1 FIG. A3.2
23	FIG. A3.3 FIG. A3.4 FIG. A3.5
24	A4. WEIGHTED LINEAR REGRESSION ANALYSIS ( A4.1 Explanation for Use of a Dummy Variable A4.2 Derivation of Weights Used in Regression Analysis FIG. A3.6
25	A4.3 Computational Procedure for Regression Analysis A4.4 Worked Example TABLE A4.1 TABLE A4.2
26	FIG. A4.1 TABLE A4.3 TABLE A4.4
27	A5. DIFFERENT (TWO) TRANSFORMATIONS FOR REPEATABILITY AND REPRODUCIBILITY A5.1 Introduction A5.2 Example Data FIG. A4.2
28	A5.3 Repeatability Transformation and Outlier Rejection TABLE A5.1 FIG. A5.1
29	A5.4 Reproducibility Transformation and Outlier Rejection TABLE A5.2
30	FIG. A5.2
31	A5.5 Analysis of Variance and Calculation of Precision Estimates TABLE A5.3 TABLE A5.4
32	X1. DERIVATION OF FORMULA FOR CALCULATING THE NUMBER OF SAMPLES REQUIRED (see X1.1 X1.2 FIG. A5.3
33	X1.3 X1.4 REFERENCES

Additional information

Standard Title	D6300-08 Standard Practice for Determination of Precision and Bias Data for Use in Test Methods for Petroleum Products and Lubricants
Published Code	ASTM
Publication Date	2008
Pages Count	33
ICS Codes	03.120.20 - Product and company certification. Conformity assessment

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ASTM-D6300 2008

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