For each potential risk identified, the question must be asked: "What is the Critical Process Variance from known standards or best practices?" Looking at Chapter 1, Figure 1-2 , there are five choices (levels) of Critical Process Variance: Minimal, Small, Acceptable, Large, and Significant. Associated with these five "levels" are the letters ‘a’ through ‘e’. They correspond to the y-axis on the Assessment Guide. If the variance of a process from a known standard or best practice is considered minimal (level ‘a’), the risk will be determined by proceeding along the ‘a’ row to the Consequence level selected. The risk will be low per this figure, unless of course the Consequence is considered "Significant" (level ‘5’).