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PERT / CPM

PERT / CPM. PERT Program Evaluation & Review Technique CPM Critical Path Method. A Simple Project. Project Network. ES Earliest Starting (time) EF Earliest Finishing LS Latest Starting LF Latest Finishing Slack Extra Time. Earliest Starting/Finishing Times. EF = ES + t.

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PERT / CPM

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  1. PERT / CPM PERT Program Evaluation & Review Technique CPM Critical Path Method

  2. A Simple Project

  3. Project Network

  4. ES Earliest Starting (time) EF Earliest Finishing LS Latest Starting LF Latest Finishing Slack Extra Time

  5. Earliest Starting/Finishing Times EF = ES + t

  6. LS = LF - t

  7. What if activity times are variable? a optimistic time m most likely time b pessimistic time t = E(T) expected time = (a + 4m + b)/6 V(T) variance = (b - a)2/36

  8. Activity TimeExpected Value and Variance

  9. Possible Paths and Statistics

  10. What is the probability that the project takes at least 10 days? • What is the probability that the project takes less than 7 days?

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