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Notes: Estimation in Multiphase Designs for Stratification

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An unbiased estimator of a total and an unbiased estimator of its corresponding variance are given for a multiphase sampling design for stratification. Two, three, and four phases of sampling are examined. Efficient allocation of sampling effort for each phase of sampling is also considered. A numeric example is presented for a three-phase sampling design. Forest Sci. 30:484-491.
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Keywords: Unbiased variance estimators; random sampling; sample size allocation

Document Type: Miscellaneous

Affiliations: Head, Department of Forest and Wood Sciences, Colorado State University, Fort Collins, CO 80523

Publication date: 01 June 1984

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