Decomposing a system into granular tasks and summing individual estimates. Detailed Design
Captures Optimistic, Most Likely, and Pessimistic estimates to find a weighted average: Planning/Risk Assessment Software Estimation Best Practices, Tools & Tec...
Use the Estimate Accuracy Ratio (EAR) (Actual Hours / Estimated Hours). A healthy target is 0.9–1.1 . 3. Leading Estimation & Management Tools Decomposing a system into granular tasks and summing