Help with Propagation of Uncertainty (GUM Method)

[Sam_]

I'm trying to calculate uncertainty (bias and precision) as it propagates through a (non-trivial) data reduction equation. Despite having some literature sources at my disposal, I'm struggling with some of the finer points of the overall procedure. If there is someone around with experience in this type of thing that would be willing to answer some specific questions, I'd be very appreciative.

Sincerely,
Sam.