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Biometrika 1976 63(3):493-499; doi:10.1093/biomet/63.3.493
© 1976 by Biometrika Trust
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The robust estimation of the density of a forest stand using a new conditioned distance method

TREVOR F. COX

Department of Mathematical Statistics, University of Hull

Estimators for the density of points in a plane may be unbiased for the spatial pattern for which they were designed but are usually biased for most others. Two new estimators are proposed which are approximately unbiased for a wide range of patterns, and are used on data in the form of the positions of the centres of trees in a forest stand.

Key Words: Density estimation • Distance method • Forest stand • Nearest neighbour • Robustness • Spatial pattern • Two-dimensional point process


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