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    Author(s): F. Thomas Lloyd
    Date: 1978
    Source: Proceedings Soil Moisture-Site Productivity Symposium USDA Forest Service Southeastern Area S&PF
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
    PDF: Download Publication  (176.0 KB)

    Description

    Although correlation analysis is widely used, it is not well known that using variables measured with error causes the correlation coefficient to be underestimated (or biased toward zero). Knowledge of the form of this bias will help in the selection of variables to be used in studying soil and site productivity relationships . An example using site index shows that bias can be appreciable.

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Lloyd, F. Thomas. 1978. Choice of variables for correlation analysis when measurement error is present. In: Proceedings Soil Moisture-Site Productivity Symposium USDA Forest Service Southeastern Area S&PF; 1978; Atlanata, GA: 292-295.

    Keywords

    Bias, site index, variance ratios, Pinus taeda

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