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Variance Estimation in Stratified Random Sampling in the Presence of Two Auxiliary Random Variables
(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 ...
Deriving Penalized Splines For Estimation Of Time Varying Effects In Survival Data
(International Journal of Scientific & Technology Research, 2014)
The major interests of survival analysis are either to compare the failure time distribution function or to assess the effects of covariate on survival via appropriate hazards regression models. Cox’s proportional hazards ...