Software engineeringintermediate
In project management network scheduling, what are the primary distinctions between PERT and CPM regarding network orientation and the nature of their time estimates?
Answer
PERT is event-oriented and uses probabilistic time estimates, whereas CPM is activity-oriented and uses deterministic time estimates.
Explanation
### The concept
Project Evaluation and Review Technique (PERT) and Critical Path Method (CPM) are scheduling approaches, but the material distinguishes them by orientation and estimate type. PERT is event-oriented and probabilistic, so it represents uncertainty in estimates. CPM is activity-oriented and deterministic. The critical path in CPM determines the total duration of the project.
### What a good answer covers
- Identifies PERT as event-oriented and probabilistic.
- Identifies CPM as activity-oriented and deterministic.
- Explains the role of the critical path in determining project duration.
- Notes that both scheduling and cost considerations may be represented by project tools.
### Terms
- **PERT**: Project Evaluation and Review Technique, a project scheduling tool.
- **CPM**: Critical Path Method, an activity-oriented scheduling technique.
### Remember
When comparing them, state both orientation and estimate character.
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