We develop an indicator of project uncertainty via the sensitivity of the IRR to any assumption regarding which performance scenario for the project is most relevant. The most relevant scenario represents the performance (into the future) that we should project (as compared to any we actually project). Our indicator is a measure one can regard as a form of absolute value of elasticity that we define as the ratio of an expected absolute value change in IRR, over differing scenarios, to a location parameter.
Emerald Group Publishing Limited
Dennis, Steven A; Smith, William Steven (2011). Elasticity as a Measure of Project Uncertainty. Emerald Group Publishing Limited 27 273-281. Retrieved from https://oaks.kent.edu/finpubs/8