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A class of modified chain-type estimators using two auxiliary variables in two phase sampling. (English) Zbl 0859.62017

Summary: We proposed a class of modified chain-type estimators by making use of a known coefficient of variation of a second auxiliary character in two-phase sampling. It has been compared with various estimators including those derived from the proposed one. The performance has been supported by a numerical example.

MSC:

62D05 Sampling theory, sample surveys
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