[kplato] Summary of Data Discussion

[bilbo]

On 19 Jun 2001, at 16:43, Jim Sabatke wrote:

> Every line should have a confidence (risk) associated with it.  However, 
> with tasks that have subtasks, the values should be computed, not entered.
On what basis? Are you going to sum all the confidences for all the 
subtasks? Just those on the critical path? Or perform some 
statistical calcualtion like "half the confidence for each subtask on 
the critical path". I think that we should at least consider having a 
separate confidence even for a task with subtasks, but it could be 
optional.
In many projects I have been involved with the 
contingency/confidence/risk has been an uncertainty, and thus a 
plus/minus value, not just possible overrun. This is why I am 
suggesting a separate value for task - if you add up all the 
plus/minus values you can get back to zero.

It seems that the terms Contingency, Confidence, Risk and 
Uncertainty are possibly all referring to the same thing, but maybe 
not. I see it as either underrun or overrun and not just overrun.
But then I am only familiar with software projects.
Yes even these sometimes come in ahead of time!



regards,
        Bill