Copyright David Ullman, Camas Inc.
Confidence
scales
Impossibly Unlikely Questionably
Potentially Feasibly Perfectly
Infeasibly Doubtfully Possibly Likely
Definitely
0.0 0.1
0.2 0.3 0.4
0.5 0.6 0.7
0.8 0.9 1.0
0% 10%
20% 30% 40%
50% 60% 70%
80% 90% 100%
Very Low Low
Medium High Very High
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9
1.0
Evaluation
risk
The
risk of choosing a poor alternative