Variance Function in Cluster Sampling
et al. Shukla A.K · International Journal of Computational and Theoretical Statistics · 2015
In the present article, we suggest nonlinear regression models for variance function in cluster sampling.The estimates of parameters of suggested and existing models have been obtained.The suggested and existing models have been fitted to data sets given in Sukhatme et al (1984) andZakkula Govindarajulu (1999).An improvement has been shown over existing models in the sense of best fitting, that is having lesser residual mean Square S 2 for the relationship between variance within cluster 2 w s and size of the cluster M.