Nonparametric predictive precedence testing for two groups
نویسندگان
چکیده
Nonparametric predictive inference (NPI) is a statistical approach based on few assumptions about probability distributions, with inferences based on data. NPI assumes exchangeability of random quantities, both related to observed data and future observations, and uncertainty is quantified via lower and upper probabilities. In this paper, lifetimes of units from groups X and Y are compared, based on observed lifetimes from an experiment that may have ended before all units had failed. We present upper and lower probabilities for the event that the lifetime of a future unit from X is less than the lifetime of a future unit from Y , and we compare this approach with traditional precedence testing.
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