A list of differences between PERT and CPM is given below. Choose the option that is incorrectly matched with either PERT or CPM. CPM categorises activities into critical and non-critical activities whereas PERT does not.In PERT, the duration of activities is accurate and definite whereas in CPM it is not.PERT is a probabilistic management tool whereas CPM is a deterministic management tool. PERT is suitable for defense and R&D projects where activity time cannot be reliably predicted whereas CPM is suitable for problems in industrial settings, plant maintenance and civil construction projects.
Question
A list of differences between PERT and CPM is given below. Choose the option that is incorrectly matched with either PERT or CPM. CPM categorises activities into critical and non-critical activities whereas PERT does not.In PERT, the duration of activities is accurate and definite whereas in CPM it is not.PERT is a probabilistic management tool whereas CPM is a deterministic management tool. PERT is suitable for defense and R&D projects where activity time cannot be reliably predicted whereas CPM is suitable for problems in industrial settings, plant maintenance and civil construction projects.
Solution
The statement that is incorrectly matched is: "In PERT, the duration of activities is accurate and definite whereas in CPM it is not." This is incorrect because in PERT, the duration of activities is not definite and is estimated using three time estimates (optimistic, most likely, and pessimistic), due to the uncertainty and risk involved in the project. On the other hand, in CPM, the duration of activities is assumed to be fixed and definite.
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