Quality management · The capability measure · Element
The variation
How much the process output actually varies.
The part
What it is
Measured over enough output to represent normal operation, including across shifts, batches and operators.
Variation measured within one shift understates the real spread, which is how processes appear capable and then are not.
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.
Sampled across
Shifts, batches and operators, since within-shift sampling understates variation.
Text shared type