medium · Project Management Professional Predictive (Plan-Driven)
A critical path at Kestrel Civic has three activities. A: σ^2=1, B: σ^2=4, C: σ^2=4. The project manager is asked to reduce path uncertainty.
Which activity's variance reduction would have the greatest impact on σ_path?
- The activity with the longest expected duration, regardless of its variance.
- Activity A, because its variance is already the lowest.
- Activities B or C, because they contribute more to the sum of variances.
- All activities have an equal impact because standard deviations are additive.
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