What-If Scenario Analysis
A technique that explores hypothetical situations to forecast how they could influence project objectives such as scope, schedule, cost, and quality.
Key Points
- Tests alternative assumptions or events to see potential outcomes.
- Supports risk, schedule, and cost decisions by revealing impacts on objectives.
- Can be qualitative or quantitative, done manually or with modeling and simulation tools.
- Findings guide contingency reserves, response plans, and updates to baselines.
Example
A project manager evaluates three cases for a critical component delivery: on time, 2-week delay, and partial shipment. They adjust the schedule for each case to see changes to the critical path, finish date, and costs, then decide to place a backup order and add schedule reserve.
PMP Example Question
While developing the schedule, a project manager models the effect of a 2-week outage of the testing lab on the project finish date and critical path. What technique is the manager using?
- Sensitivity analysis
- What-if scenario analysis
- Root cause analysis
- Trend analysis
Correct Answer: B — What-if scenario analysis
Explanation: The manager is examining hypothetical conditions to predict their impact on schedule objectives and the critical path.
HKSM