Double sampling for ratio and regression estimation with sub-sampling the non-respondents - ARCHIVED

Cochran (1977, p.374) proposed some ratio and regression estimators of the population mean using the Hansen and Hurwitz (1946) procedure of sub-sampling the non-respondents assuming that the population mean of the auxiliary character is known. For the case where the population mean of the auxiliary character is not known in advance, some double (two-phase) sampling ratio and regression estimators are presented in this article. The relative performances of the proposed estimators are compared with the estimator proposed by Hansen and Hurwitz (1946).