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LAB / SA-MET-VARIABILITY-UQ-068

Variability, metrology & UQ
separate before combining

Change one local teaching assumption at a time. The workbench preserves quantity, unit, grain, denominator, class, evaluation method, and non-claim boundaries.

V136 / CURRENT-TAB WORKBENCH

Keep the contract attached to the number.

Explore one bounded case at a time. Quantity, unit, grain, denominator, and evidence class remain fixed while local teaching assumptions move.

8 case budgets4 uncertainty classes0 network writes
Patterningedge-position residualdetrended edge-trace segment / per 256 nm trace
Combined standard uncertainty0.4379 nm

Same quantity, grain, denominator, and illustrative evidence class only.

k = 2 teaching interval+/- 0.8759 nm

Not a universal confidence, coverage, acceptance, or disposition statement.

Effective degrees of freedom122.4

Welch-Satterthwaite teaching calculation over finite component degrees.

componentrelative variance
ALEATORICTYPE A
0.36 nm
EPISTEMICTYPE B
0.12 nm
MEASUREMENTTYPE A
0.18 nm
MODELTYPE B
0.1 nm

Covariance contribution: 0.0054 nm2

Quantityedge-position residualUnitnmGraindetrended edge-trace segmentDenominatorper 256 nm traceEvidenceillustrative-original-surrogate