Quality management · The capability measure · Element
The stability
Whether the process behaves consistently over time.
The part
What it is
Capability calculated on an unstable process is meaningless, because the next period will differ.
Stability comes first: a stable but incapable process can be improved predictably, while an unstable one cannot be assessed at all.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.