A PERT chart is a graph that represents all of the tasks necessary to a project’s completion, and the order in which they must be completed along with the corresponding time requirements. Certain tasks are dependent on serial tasks, which must be completed in a certain sequence. Tasks that are not dependent on the completion of other tasks are called parallel or concurrent tasks and can generally be worked on simultaneously. PERT charts are preferable to Gantt charts because they more clearly identify task dependencies; however, the PERT chart is often more challenging to interpret. As such, project managers frequently employ both methodologies.
Investment dictionary. Academic. 2012.
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