RRA

rra is an acronym that may refer to several terms across different fields. The intended meaning is usually clear from the domain or context.

- Relative risk aversion (RRA) — In economics, RRA denotes the relative risk aversion coefficient, a measure of how an individual's willingness to take on risk changes with wealth. It is a concept used in expected utility theory and portfolio choice.

- Robust rank aggregation (RRA) — In statistics and bioinformatics, RRA is a non-parametric method for combining multiple ranked lists to identify items that consistently rank highly across lists. It is used to integrate results from multiple studies or experiments.

- Railroad Retirement Act (RRA) — In United States law, the Railroad Retirement Act established a federal retirement system for railroad workers, administered by the Railroad Retirement Board, complementing Social Security benefits.

Other uses exist in different disciplines, reflecting the versatility of the acronym. Context such as field, organization, or accompanying terms usually clarifies which RRA is intended.