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The chain type product estimators of population mean along with its variance and estimated variance in the context of two stage sampling design involving two auxiliary variables are useful in situations where negative correlation exists between the study and the auxiliary variable. Chaining of estimators is required in order to use the acquired information on various auxiliary variables and double-sampling design is found to be suitable for gathering information.

Produktbeschreibung
The chain type product estimators of population mean along with its variance and estimated variance in the context of two stage sampling design involving two auxiliary variables are useful in situations where negative correlation exists between the study and the auxiliary variable. Chaining of estimators is required in order to use the acquired information on various auxiliary variables and double-sampling design is found to be suitable for gathering information.
Autorenporträt
Ronit Jaiswal é Mestre em Estatística Agrícola pelo ICAR-Indian Agricultural Research Institute (IARI), Nova Deli. É licenciado em Medalha de Ouro pela Universidade Agrícola de Junagadh, Gujarat. Tem doutoramento qualificado AIEEA-PG JRF, ICAR-IARI, ICAR-NET,UGC-NET e UGC JRF & SRF. Está actualmente a tirar o doutoramento no ICAR-IARI, Nova Deli.