A new method to derive con®dence intervals for medians in a ®nite population is presented. This method uses multi-auxiliary information through a multivariate regression type estimator of the population distribution function. A simulation study based on four real populations shows its behaviour versus other known methods.
(2012). General procedure for estimating the population mean using ranked set sampling.
SUMMARY INTRODUCTION: with adecuate antiepilectic therapies; there are 40% patients with persisten crisis and 20% of them have any response to antiepilectic drugs. This patients have a refractary epilepsia almost produced by mesial sclerosis of temporal lobe. Surgery mough be a good alternative in these cases. OBJECTIVE: to describe the experience of… (More)