Adjust each value to reflect the Pessimistic, Middle and Optimistic outcomes for this decision. Help...?

**Pessimistic** outcome is

Adjust to the average value of the worst 20% of possible outcomes for this decision.

**Middle** outcome is

Adjust to the value of the middle outcome i.e. 50% better, 50% worse (Median).

**Optimistic** outcome is

Adjust to the average value of the best 20% of possible outcomes for this decision.