  In this work, we propose estimators for the uncertainty in mean residual
times that require, for their evaluation, statistically independent individual
residence times obtained from a discrete time process. We examine their
performance through numerical experiments involving well-known probability
distributions, and an application example using molecular dynamics simulation
results, from an aqueous NaCl solution, is provided. These computationally
inexpensive estimators, capable of achieving very accurate outcomes, serve as
useful tools for assessing and reporting uncertainties in mean residual times
across a wide range of simulations.
