REQ-FUN-133
Three-point duration estimates on activity (PERT)
What
Optional duration_optimistic, duration_most_likely, duration_pessimistic on activity. PERT expected = (O + 4M + P) / 6; std = (P - O) / 6.
Why
established project management guidelines Estimate Activity Durations output includes three-point estimates for activities with material uncertainty.
How
Schema migration adds optional fields. PERT expected computed on read. REQ-FUN-103 critical-path consults PERT when present.
Done when
Activity CRUD supports the three new fields; PERT expected computed and surfaced; Gantt confidence band rendered.
Out of scope
Monte Carlo simulation.
established project management guidelines Mapping
Three-point PERT estimates are the established project management guidelines Estimate Activity Durations output for activities with material uncertainty.