saurabh mahajanPMP, ITIL, PRINCE2| vodafonePune, Maharashtra, India
While using PERT technique to calculate estimate, team members will provide the most likely estimate for an activity to complete. However to consider the optimistic and pessimistic estimate is there a thumb rule as such. How to take optimistic and pessimistic estimate ? like it should be +- 20% of the most likely , etc Saving Changes...
As per my view there should not be any formula. If you drive the Optimistic and Pessimistic using formula than how do you thing the estimate will be efficient. When your team member is estimating it ask them to estimates accordingly. Saving Changes...
Sergio Luis ConteHelping to create solutions for everyone| Worldwide based OrganizationsBuenos Aires, Argentina
It is not a rule of thumb. It is based on information. If you read the PERT method theory then you have the answer. Saving Changes...
+-20% idea is way of the track. That essentially kills the spirit of PERT altogether. PERT is a way of estimating probability f an activity happening in a specific time frame or cost bracket. It has to be done based on statistical data which you must have rom the people and environment around you. Saving Changes...
