ASTM E105 - 10

    Standard Practice for Probability Sampling Of Materials

    Active Standard ASTM E105 | Developed by Subcommittee: E11.10

    Book of Standards Volume: 14.02


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    ASTM E105

    Significance and Use

    The purpose of the sample may be to estimate properties of a larger population, such as a lot, pile or shipment, the percentage of some constituent, the fraction of the items that fail to meet (or meet) a specified requirement, the average characteristic or quality of an item, the total weight of the shipment, or the probable maximum or minimum content of, say, some chemical.

    The purpose may be the rational disposition of a lot or shipment without the intermediate step of the formation of an estimate.

    The purpose may be to provide aid toward rational action concerning the production process that generated the lot, pile or shipment.

    Whatever the purpose of the sample, adhering to the principles of probability sampling will allow the uncertainties, such as bias and variance of estimates or the risks of the rational disposition or action, to be calculated objectively and validly from the theory of combinatorial probabilities. This assumes, of course, that the sampling operations themselves were carried out properly, as well. For example, that any random numbers required were generated properly, the units to be sampled from were correctly identified, located, and drawn, and the measurements were made with measurement error at a level not exceeding the required purposes.

    Determination of bias and variance and of risks can be calculated when the selection was only partially determined by random numbers and a frame, but they then require suppositions and assumptions which may be more or less mistaken or require additional data which may introduce experimental error.

    1. Scope

    1.1 This practice is primarily a statement of principles for the guidance of ASTM technical committees and others in the preparation of a sampling plan for a specific material.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    E122 Practice for Calculating Sample Size to Estimate, With Specified Precision, the Average for a Characteristic of a Lot or Process

    E141 Practice for Acceptance of Evidence Based on the Results of Probability Sampling

    E456 Terminology Relating to Quality and Statistics

    E1402 Guide for Sampling Design


    UNSPSC Code

    UNSPSC Code


    DOI: 10.1520/E0105-10

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