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    Volume 11, Issue 5 (September 1983)

    Variances in Sampling Streams of Coal

    CODEN: JTEOAD

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    Abstract

    Beginning with the postulate that the serial correlation in an infinite population is invariant with respect to segment mass, expressions are developed for variance as a function of mass and expected variance of the mean using random, stratified random, or systematic sampling of a linear population. The expression for variance as a function of mass is shown to agree well with data from one coal experiment and to be the same as an empirical formula developed from agricultural experiments.


    Author Information:

    Rose, CD
    President, Coal Technology Consultants, Inc., Subsidiary of Hoff and Associates, Inc., Birmingham, AL


    Stock #: JTE10690J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10690J

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    Author
    Title Variances in Sampling Streams of Coal
    Symposium , 0000-00-00
    Committee D05