How does the Program Evaluation and Review Technique PERT improve time estimation accuracy

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Estimating project timelines accurately is always a challenge. How does the Program Evaluation and Review Technique (PERT) improve time estimation, and when is it most useful?
16 hours ago in PMP by Parshvi
• 4,340 points
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1 answer to this question.

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PERT is an excellent tool for estimating project deadlines when there is uncertainty. It operates as follows:

  • Establishing Three-Time Estimates for Each Task

    • Optimistic (O): Best-case scenario.

    • Pessimistic (P): Worst-case scenario.

    • Most Likely (M): Expected duration.

  • Calculating Expected Time with the PERT Formula

    TE= O+4M+P​/6

    This weighted formula mitigates the effects of extreme instances.
  • Identifying Critical Path - Once task durations have been assessed, PERT can help determine the longest path through the project.

  • Assessing Variability and Risk - PERT gives a standard deviation estimate to help project managers prepare for schedule concerns.

PERT enhances planning accuracy by including statistical analysis, particularly in projects with unpredictable work durations.

answered 15 hours ago by Naira

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