Volume 16, Issue 1 (January 1988)

    Sampling Variance: Bias and Reproducibility


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    Product quality necessitates the collection of a representative sample for analysis. The representativeness of a sample is measured by its accuracy or variance. Sampling variance is discussed in two parts, bias and reproducibility. Bias is an error that consistently results in either high or low analysis. Test methods for bias are described in detail. Reproducibility is a measure of expected fluctuation around the true result. Reproducibility can be reduced by additional increments, analysis, or both.

    Author Information:

    Savage, KI
    Director, Technical Services, Commercial Testing & Engineering Company, Lombard, IL

    Stock #: JTE11058J

    ISSN: 0090-3973

    DOI: 10.1520/JTE11058J

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    Title Sampling Variance: Bias and Reproducibility
    Symposium , 0000-00-00
    Committee D05