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Singletons, Cluster-Robust Standard Errors and Fixed Effects . . . This has been informally recognized by some researchers, who address the problem by dropping singletons from the regression sample However, an often overlooked fact is that with more than one fixed effect, singletons need to be dropped iteratively
Singletons - Institute for Advanced Study Consider a population of identical age-less individuals (singletons) where each individual can go through one of the two possible transforma-tions - it can die or it can divide into two
The Empirical Distribution of Singletons for Geographic . . . Here, we define the empirical distribution of singletons in a sample of chromosomes as the proportion of the total number of singletons that each chromosome carries, and we present a theoretical background for studying this distribution
Title: Use information from singletons in fixed effect . . . In the case of rotating panels, singletons are the result of the sampling framework This happens in many labor force surveys in which a share of the observations is replaced in each wave, and the observations that are interviewed only in the first wave are singletons by design