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A new ranked set sample estimator of variance

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Summary. We develop an unbiased estimator of the variance of a population based on a ranked set sample. We show that this new estimator is better than estimating the variance based on a simple random sample and more efficient than the estimator based on a ranked set sample proposed by Stokes. Also, a test to determine the effectiveness of the judgment ordering process is proposed.
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Keywords: Judgment order statistic; Judgment stratified sampling; Relative efficiency; Unbiasedness

Document Type: Research Article

Publication date: 2002-05-01

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