PERT works most effectively on projects where the amount of time is the key criteria used to estimate the deadlines (and not other units, such as Story Points). Here are some examples of the projects where PERT can be a must-have solution: 1. If requirements are not specified in detail. 2. The team is just starting to work on the project. 3. For newly assembled teams. 4. If you are going to use new technologies or solutions.
This method's average efficiency, in our experience, is 75-80%. Note that the pessimistic value should not be close to the most likely or optimistic. In our development practice, we set a bigger 'buffer' between the pessimistic and most-likely scenario than between the most-likely and optimistic ones.
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Thank you for your question, George!
PERT works most effectively on projects where the amount of time is the key criteria used to estimate the deadlines (and not other units, such as Story Points). Here are some examples of the projects where PERT can be a must-have solution: 1. If requirements are not specified in detail. 2. The team is just starting to work on the project. 3. For newly assembled teams. 4. If you are going to use new technologies or solutions.
This method's average efficiency, in our experience, is 75-80%. Note that the pessimistic value should not be close to the most likely or optimistic. In our development practice, we set a bigger 'buffer' between the pessimistic and most-likely scenario than between the most-likely and optimistic ones.