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    Author(s): Gerald S. Walton; C.J. DeMars; C.J. DeMars
    Date: 1973
    Source: Res. Pap. NE-272. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 15 p.
    Publication Series: Research Paper (RP)
    Station: Northeastern Research Station
    PDF: View PDF  (2.56 MB)

    Description

    The authors discuss the problem of selecting estimators of density and survival by making use of data on a forest-defoliating larva, the spruce budworm. Varlous estimators are compared. The results show that, among the estimators considered, ratio-type estimators are superior in terms of bias and variance. The methods used in making comparisons, particularly simulation, are generally applicable to situations in which data appropriate for making estimates are on hand.

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    Citation

    Walton, Gerald S.; DeMars, C.J. 1973. Empirical methods in the evaluation of estimators. Res. Pap. NE-272. Upper Darby, PA: U.S. Department of Agriculture, Forest Service, Northeastern Forest Experiment Station. 15 p.

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