Specification limit provenance sheet
StatMedAnalysis | 9 November 2026
Use aggregate or synthetic process observations.

Use before computing capability. Mark whether a requirement is one-sided or two-sided.
Process and measurement unit: ______________________  Reference operating conditions: __________
Limit | Numeric value | Units | Requirement owner/document | Version/date | Applies to
Lower | _____________ | _____ | __________________________ | ____________ | __________
Upper | _____________ | _____ | __________________________ | ____________ | __________
Dispersion estimator, sample size and reference interval: ________________________
Stability evidence / distribution check: ________________________________________
1. Confirm production measurements and requirements use the same scale.
2. Check whether the reference SD represents within-run or longer-term variation.
3. Record the decision maker and what a low capability estimate would trigger.
Fictional example: a simulator must return 90–110 units. A stable reference mean of 106 leaves only four units of upper-side clearance. Keep these externally set limits separate from estimated monitoring limits.
Completion check: both limit values have a source independent of the observed sample extremes.