OPS.18:4.3 - Interpret the observation within its evidence limits

Calculate the selected quantity from its declared population. Use OPS.15 when event identity, coverage, time or missing observations need repair. Preserve any consequential uncertainty in the control decision.

A process-monitoring signal supports the action specified by its policy; it does not identify the cause by itself. An observation within the limits can still violate a product requirement. A capability claim needs the relevant stable-process and specification basis.

An error budget expresses permitted service loss for a stated objective and population. Compare observed loss with that allowance, then apply the authorized policy. Protected safety, human or clinical conditions remain applicable regardless of budget remaining.

A sample acceptance result supports the named lot decision under its plan and risks. It does not establish that every item conforms, that the process is stable or that a known failure mechanism has been corrected.