ASTM D4460-97(2015) PDF

Scope: 4.1 Precision limits for a test result that is calculated by addition, subtraction, multiplication, or division of two other test results that have valid precision limits can be calculated directly. This saves the cost and delay of conducting an interlaboratory study.

4.2 At the heart of statistical theory is the concept of a frequency distribution of a random variable. The precision limit of the random variable is determined by the standard deviation of the variable. The standard deviation of a random variable that is the sum, difference, product, or quotient of two other random variables can be calculated simply so long as the individual variables are independent and the standard deviations are small relative to their mean values. These restrictions are usually met in ASTM methods. In those cases where these restrictions are not met, other methods can be used. Only cases complying with the restrictions are covered in this standard.

1.1 This practice covers techniques for calculating precision limits when values are calculated from two other methods having precision limits.

1.2 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.

ASTM D4460-97(2015) Referenced Document

ASTM D1188 Standard Test Method for Bulk Specific Gravity and Density of Compacted Bituminous Mixtures Using Paraffin-Coated Specimens
ASTM D2041 Standard Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures*， 2024-04-20 Update
ASTM D3203 Standard Test Method for Percent Air Voids in Compacted Dense and Open Bituminous Paving Mixtures*， 2000-07-10 Update
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods

2022 ASTM D4460-22a Standard Practice for Calculating Precision Limits Where Values Are Calculated from Other Test Methods
2022 ASTM D4460-22 Standard Practice for Calculating Precision Limits Where Values Are Calculated from Other Test Methods
1997 ASTM D4460-97(2015) Standard Practice for Calculating Precision Limits Where Values are Calculated from Other Test Methods
1997 ASTM D4460-97(2009) Standard Practice for Calculating Precision Limits Where Values are Calculated from Other Test Methods
1997 ASTM D4460-97(2005) Standard Practice for Calculating Precision Limits Where Values are Calculated from Other Test Methods
1997 ASTM D4460-97(2004) Standard Practice for Calculating Precision Limits Where Values are Calculated from Other Test Methods
1997 ASTM D4460-97 Standard Practice for Calculating Precision Limits Where Values are Calculated from Other Test Methods