Estimates
Use
Using this method involves making a subjective assessment of the project degree of completion. The method is schedule-based. This measuring technique is based on scheduling.
You use this technique when no other, objective method is available. The work package duration for this technique should be more than three months.
Prerequisite
You must manually maintain a plan or actual percentage of completion (POC) for the WBS element/activity for each period. The system prescribes the periods on the basis of the dates maintained.
The following table gives you an overview of the menu paths to choose so that you can maintain data you need for your estimates:
Object |
Maintain estimate data by choosing... |
Projects in structure planning |
|
Projects in the project planning board |
|
WBS elements |
|
Activity or activity elements |
|
In addition, you can also enter a measurement method for estimates and a maximum percentage of completion in Project System customizing.
A maximum POC prevents an overestimate of completion such as occurs when tasks are "almost finished" (also called the "90% syndrome"). As long as the task has not been completed, that is, no actual finish date has been entered, the system will not allow you to have an actual POC that is higher than the maximum POC.
Note
We recommend a maximum POC of 80% for the actual POC estimate.
Features
In this measurement method, the system adopts the percentage entered manually as the POC for the specified period.
Note
You always enter the cumulative estimate. The values are not regarded as additive.
Example
Plan Dates |
Estimated Values |
Planned POC |
05.99 |
10% |
10% |
06.99 |
30% |
30% |
07.99 |
100% |
100% |