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Question
Which one of the following statements is correct?
A.
CPM is developed especially for scheduling of research and development work.
B.
PERT is developed for the quality control laboratory work at construction site.
C.
PERT is a method of statistically evaluating project duration over a time-sensitive domain.
D.
A project schedule is a rough time table of construction operation.
Answer ( Option C)

PERT is a method of statistically evaluating project duration over a time-sensitive domain.

Solution

• Pert follows the probabilistic approach and absorbs the uncertainties into the time estimates for activity and project durations. 
• Therefore pert is well suited for those projects where there is insufficient or no background information for estimation of time duration. 
• PERT is used in R & D type projects such as space industry, defence industry etc. As such projects are of non repetitive type or once-through type for which correct time estimates cannot be made. 
• Whereas CPM is mostly used in construction projects when there is prior experience in handling similar projects from which relationships between resources and job time are available.

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