PERT is a probabilistic technique,whereas CPM is a deterministic technique.

Question

Quizplus · Accepted Answer

PERT takes into account the estimation uncertainties and uses statistical methods to represent activity time estimates in terms of three values (optimistic, most likely, and pessimistic) and their probabilities of occurrence to evaluate the project duration and identify the critical path. CPM, on the other hand, uses a deterministic approach to calculate the project schedule based on fixed activity durations and their dependencies.

PERT Is a Probabilistic Technique,whereas CPM Is a Deterministic Technique