Main Yaque, Paloma2023-06-202023-06-201988-120167-715210.1016/0167-7152(88)90060-0https://hdl.handle.net/20.500.14352/57545We relate the classes of life distributions based on notions of aging with those that depend on the tail behaviour. This last classification introduces the concepts of outlier-neutral, outlier-prone and outlier- resistant distributions. We prove some results that connect IFR, IFRA, NBU and NBUE definitions with the outlier-resistance concept. Similarly the relationship of DFR, DFRA, NWU and NWUE to outlier-proneness is obtained.journal articlehttp://www.sciencedirect.com/science/article/pii/0167715288900600http://www.sciencedirect.com/metadata only access519.21extreme-value theoryreliability analysisregular variationlife distributionsagingtail behaviouroutlier-neutraloutlier-proneoutlier-resistant distributionsIFRIFRANBUNBUEDFRDFRANWUNWUEEstadística matemática (Matemáticas)1209 Estadística