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A PPS Sampling Scheme Using Harmonic Mean of An Auxiliary VariableKeywords: Auxiliary variable , correlation coefficient , efficiency , finite population , inclusion probability , ppz sampling , unbiased estimator Abstract: We consider a probability proportional to size sampling scheme by using harmonic mean of an auxiliary variable, when the correlation between study variable and auxiliary variable is highly negative. This is achieved by considering inverse transformation of the auxiliary variable and then utilizing the transformed auxiliary variable values at the design stage of the survey operation in selecting a sample.
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