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PERT

In 1957, the Program Evaluation and Review Technique (PERT) was created to support the U.S. Navy’s Polaris submarine project. One of the elements of PERT is the way that estimates are calculated. The scheme provides a very simple, but very effective way to convert estimates into probability distributions suitable for managers.

When you estimate a task, you provide three numbers. This is called trivariate analysis:


  

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