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Difference between CPM vs PERT
| CPM | PERT |
| CPM is activity oriented | PERT is event oriented |
| COM is used when the activity times are deterministic | PERT uses a probabilistic times |
| One time estimate | Three time estimate – optimistic, most likely and pessimistic |
| CPM directly introduces cost concept analysis | PERT indirectly currents for costs |
| CPM is a planning tool | PERT is a control device |