Answer of your question - 24934

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kami007
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  • Posted on: Fri 13 Sep, 2013
  • Request id: # 24791
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CPM vs. PERT

CPM or  "Critical Path Method":

  • tool to analyze project and determine duration, based on    identification of "critical path" through an activity network.
  • Knowledge of the critical path can permit management of the project to change duration.
  • A single estimate for activity time was used that did not allow for variation in activity times
  • Activity times are assumed to be known or predictable ("deterministic")
  • Activities are represented as nodes or circles

  • PERT or "Project Evaluation and Review Technique":

    • Another derivative of the GANTT chart
    • Multiple time estimates were used for each activity that allowed for variation in activity times
    • Activity times are assumed to be random, with assumed probability distribution ("probabilistic")
    • Activities are represented by arrowed lines between the nodes or circles

     
    CPM/PERT

    Over time, CPM and PERT merged into one technique referred to as "CPM/PERT".

  • Visually easier to see precedence relationships
  • Ideal for large projects with many activities
  • They consist of a network of branches and nodes.
  •