SOME IMPROVED SUGGESTIONS IN CIRCULAR SYSTEMATIC SAMPLING UNDER FULLY AND PARTIALLY RESPONDENT CASE
This paper considers the problem of estimating population mean Y of survey variable Y using circular systematic sampling design along with non response problem. Motivated by Sahai and Ray (1980), Koyunsu and Kadilar (2010), Singh and Solanki (2013) and Singh and Malik(2014), we have suggested three modified class of estimators forY . The properties of the suggested estimators are discussed and are compared with sample mean and linear regression estimator. Also, an empirical study is carried out to judge the merits of suggested estimators over other competitors based on circular systematic sampling over simple random sampling.