Abstract
Two Phase Sampling Exponential Type Estimators for Ratio and Product of two Population Means in the Presence of Non-response
Highlights
Estimation of ratio and product of two population means is widely used in the field of agriculture, socio-economics and medical sciences
For estimating the population mean by using sample values sometimes the information on all units selected in the sample is not collected due to the problem of non-response which occurs due to lack of interest, not at home, refusal and lack of the knowledge regarding to the surveys
Further by using the known population mean of auxiliary character, various ratio, product and regression type estimators for population mean in the presence of non-response have been proposed by Rao [11,12], Khare and Srivastava [13,14], Singh et al [15], Kumar and Bhougal [16] and Kumar and Kumar [17]
Summary
Estimation of ratio and product of two population means is widely used in the field of agriculture, socio-economics and medical sciences. Sometimes the population mean of auxiliary character is not known In this situation, two phase sampling ratio, product and regression type estimators have been proposed by Khare and Srivastava [18, 19], Singh and Kumar [20] and Khare et al [21]. The research works for estimating the ratio of two population means using auxiliary characters in the presence of non-response have been done by Khare and Pandey [22] and Khare and Sinha [23, 24]. We have proposed two phase sampling exponential type estimators for ratio and product of two population means in the presence of non-response. Empirical studies are given to show the performance of the proposed estimators in comprision to the relevant estimators
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