How Risk Analysis Calculates Finish Dates
Open Plan does not generate the mean and standard deviation values of the finish dates for each activity directly during risk analysis.
Instead, these dates are calculated analytically, using the sampled mean and standard deviation of the start dates and the theoretical mean and standard deviation of the specified duration distribution.
Finish dates are calculated in this manner to save both space and processing time. An unintended result, however, is the possibility of slight inconsistencies between the results reported for the finish of one activity and the start of its successor. These differences are not significant relative to the sampling error implicit in the Monte Carlo approach and should disappear if a large enough number of simulations is performed.
Related Topics
- Overview of Probability
- Using Risk Analysis
- Activity Details Risk Tab
- Probability in Durations
- Risk Analysis Output Files
- How Risk Analysis interprets Durations
- The Effect of Risk Analysis on Start Dates
- The Concept of Sampling Error
- Progress and Duration Probability
- Using the Risk Analysis Options Tab
- Using the Risk Analysis Advanced Tab