Browsing School of Pure and Applied Sciences by Author "Sidelel, Esubalew Belay"
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Variance Estimation in Stratified Random Sampling in the Presence of Two Auxiliary Random Variables
Sidelel, Esubalew Belay; Orwa, George Otieno; Otieno, Romanus Odhiambo (International Journal of Science and Research, 2014)The objective of this paper is to develop an improved population variance estimators in the presence of two auxiliary variables in stratified random sampling adapting the family of estimators proposed by Koyunchu and ...