The fundamental statistical assumption underlying PERT analysis is that__________________?
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Answer: C. a project can be subdivided into a set of predictable, independent activities
Explanation
The fundamental statistical assumption underlying PERT analysis is that projects subdivide into predictable, independent activities. Assuming task independence allows probability distributions and variance calculations to be combined across the network. Project networks rely on this modular task breakdown to compute overall completion time probability distributions. PERT modeling assumes that the completion time of one activity does not statistically influence another task. Breaking large engineering projects into smaller work packages makes schedule management and estimation feasible. Probability theory provides the mathematical backing for summing variances along the critical path.
Project managers apply PERT techniques confidently when work packages represent distinct, manageable engineering tasks. Recognizing statistical assumptions helps planners identify situations where task interdependencies might affect schedule accuracy. Structured project breakdowns improve cost control, resource allocation, and milestone tracking performance. Stating projects will always be behind schedule describes poor management rather than a foundational PERT assumption. Cost overruns relate to financial budgeting models rather than the core statistical assumptions of network scheduling. Stating activities are fixed and unchangeable contradicts the dynamic resource leveling and crashing practices used.
- Subject
- Engineering
- Category
- Mechanical Engineering
- Topic
- —
- Difficulty
- medium
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