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Notes: An Alternative Estimator for Horizontal Point Clusters

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A new approach is suggested here for estimating stand attributes when horizontal point clusters (HPCs) are used. The approach is unbiased with smaller variance than the traditional unbiased estimator for HPCs. The necessary formulas for equidistant 3-point clusters are derived. The new estimator offers an opportunity to reduce variance without changing the sample design. For. Sci 35(1):257-262.
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Keywords: Overlapping circles; cluster sampling; prism sampling; variable plot sampling

Document Type: Miscellaneous

Affiliations: Mathematical Statistician, USDA Forest Service, Southern Forest Experiment Station, 701 Loyola Ave, New Orleans, LA. 70113

Publication date: 1989-03-01

More about this publication?
  • Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
    Forest Science is published bimonthly in February, April, June, August, October, and December.

    2016 Impact Factor: 1.782 (Rank 17/64 in forestry)

    Average time from submission to first decision: 62.5 days*
    June 1, 2016 to Feb. 28, 2017

    Also published by SAF:
    Journal of Forestry
    Other SAF Publications
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