Methods for applying uncertainties

[Ken]

What are the options for modeling uncertainty in Risky—empirical data or uncertainty bands? Are they alternatives?

[Intaver Support]

Yes. Risky allows you to model uncertainty using:

• [Uncertainty bands,

• Low/High Duration settings with statistical distributions, or

• Manually entering low and high durations and setting the statistical distribution using the Statistical Distribution for Duration field which can be added as a column to Project View.

These approaches serve as alternative methods for defining uncertainty in activity durations.
Best Practices

• Use empirical data when you have historical project data you trust.

• Use uncertainty bands or distributions when data is limited or expert judgment is required.

• Maintain consistency across tasks—avoid mixing methods arbitrarily within the same project unless justified.

• Document your assumptions so results are defensible during reviews.