PMP Formula: PERT Analysis

PMP Formula PERT Analysis

Program Evaluation and Review Technique (PERT) Analysis is a method used to examine the tasks that are in a schedule and determine a variation of the Critical Path Method (CPM). It analyzes the time required to complete each task and its associated dependencies to determine the minimum time to complete a project. It estimates the shortest possible time each activity will take, the length of time, and the longest time that might be taken if the activity takes longer than expected.

To conduct PERT Analysis, three time estimates are obtained (optimistic, pessimistic, and most likely) for every activity along the Critical Path. Then use those estimates in the formula below to calculate how much time for each project stage: Equation: PERT Analysis = (O + 4M + P) ÷ 6

Formula Definition
PERT Analysis
  • = (O + 4M + P) ÷ 6

  • O = Optimistic Estimate

  • M = Most Likely Estimate

  • P = Pessimistic Estimate
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