It is shown that exact distribution-free confidence intervals for a population median can be obtained from a stratified sample under very special circumstances. The principal result concerns the order ...

A research team has developed a novel direct sampling method based on deep generative models. Their method enables efficient ...

Peter J. Bickel, J. Ritov, Large Sample Theory of Estimation in Biased Sampling Regression Models. I, The Annals of Statistics, Vol. 19, No. 2 (Jun., 1991), pp. 797-816 ...