Difference between PERT and CPM
Difference between PERT and CPM :
| S.No. | PERT (Project Evaluation and Review Technique) | CPM (Critical Path Method) |
|---|---|---|
| 1. | PERT is a project management technique, used to manage uncertain (i.e. time is unknown) activities of a project. | CPM is that technique of project management which is used to manage only certain (i.e., time is known) activities of any project. |
| 2. | It is event oriented technique, which means that network is made up on the basis of event. | It is an activity oriented technique, which means that network is made up on the basis of activities. |
| 3. | It is a probability model. | It is a deterministic model. |
| 4. | It mainly focuses on time. | It mainly focuses on Time-cost trade off( schedule that leads to minimum cost). |
| 5. | It is appropriate for high precision time estimation. | It is appropriate for reasonable time estimation. |
| 6. | It has non-repetitive nature of job. | It has repetitive nature of job. |
| 7. | There is no chance of crashing, as there is no certainty of time. | There may be crashing because of certain time limitation. |
| 8. | It doesn’t use any dummy activities. | It uses dummy activities for representing sequence of activities. |
| 9. | It is suitable for projects related to research and development. | It is suitable for construction projects. |
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