According to the PMBOK® Guide and the Standard for Project Management, Reserve Analysis is a specific tool and technique used in the Estimate Activity Durations process (within the Project Schedule Management Knowledge Area, formerly Project Time Management).
As per PMI standards, reserve analysis is used to determine the amount of contingency and management reserves needed for the project. In the context of duration estimation, it involves:
Contingency Reserves: Also known as " Schedule Reserves, " these are buffers added to the schedule to account for " known-unknowns " (identified risks). These are part of the schedule baseline.
Management Reserves: Amounts of time withheld for management control purposes for " unknown-unknowns " (unforeseen risks). These are not part of the schedule baseline but are part of the overall project duration.
Progressive Elaboration: As more precise information about the project becomes available, the reserve may be used, reduced, or eliminated.
The other options are incorrect based on their specific tools and techniques within the PMI framework:
Estimate Activity Resources: This process uses tools like expert judgment, bottom-up estimating, and data analysis (specifically alternative analysis), but reserve analysis is specifically tied to the duration or cost of those resources.
Sequence Activities: This process focuses on identifying and documenting relationships among the project activities. Its primary tools are the Precedence Diagramming Method (PDM) and Dependency Determination.
Develop Schedule: This process uses tools like Schedule Network Analysis, Critical Path Method, and Resource Optimization. While it aggregates the durations (including reserves), the analysis to determine those reserves happens during the estimation processes.
As per the PMI Lexicon of Project Management Terms, Reserve Analysis ensures that the project schedule is realistic and contains enough flexibility to handle the inherent uncertainties of project work.
