ASTM C670-13

Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials

STANDARD published on 1.7.2013

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The information about the standard:

Designation standards: ASTM C670-13
Note: WITHDRAWN
Publication date standards: 1.7.2013
SKU: NS-14549
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Annotation of standard text ASTM C670-13 :

Keywords:

acceptable range, bias, coefficient of variation, difference limit, multilaboratory precision, single-operator precision, standard deviation, test determination, test result, ICS Number Code 91.100.01 (Construction materials)

Additional information

1. Scope

1.1 The Form and Style for ASTM Standards requires that all test methods contain statements on precision and bias. Further, the precision statement is required to contain a statement on single-operator precision (repeatability) and a statement on multilaboratory precision (reproducibility). This practice provides guidance for preparing precision and bias statements that comply with these requirements. Discussion of the purpose and significance of precision and bias statements for users of test methods is also provided. Examples of precision statements that conform to this practice are included in Appendix X1. This practice supplements Practice E177 and has been developed to meet the needs of ASTM Committees dealing with construction materials.

1.2 This practice assumes that an interlaboratory study (ILS) has been completed in accordance with Practice C802 or Practice E691. The interlaboratory study provides the necessary statistical values to write the precision and bias statements.

1.3 The system of units for this practice is not specified. Dimensional quantities in the practice are presented only in examples of precision and bias statements.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

D6607-21	Standard Practice for Inclusion of Precision Statement Variation in Specification Limits
E691-23	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E456-13a(2022)	Standard Terminology Relating to Quality and Statistics (Includes all amendments and changes 4/21/2022).
C1067-20	Standard Practice for Conducting a Ruggedness Evaluation or Screening Program for Test Methods for Construction Materials
C802-14(2022)	Standard Practice for Conducting an Interlaboratory Test Program to Determine the Precision of Test Methods for Construction Materials
E177-20	Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods

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