A new improved difference-cum-exponential ratio type estimator in systematic sampling using two auxiliary variables

Shabbir, J.Masood, S.Gupta, S.2020-12-072020-12-072020-03Journal of the National Science Foundation of Sri Lanka, 48(1):p.27-36https://dl.nsf.gov.lk/handle/1/25125A new improved difference-cum-exponential ratio type estimator in systematic sampling using two auxiliary variablesArticle