Uncertainty in measurements.

[StephenG1CMZ]

Although the calculator doesn't have explicit support for this AFAIK, many of the numeric functions do support lists.
So instead of calculating, say, LOG(10), one can calculate LOG({9.999,10,10.001}) or LOG(10×{.95,1,1.05}) and this could be used to show the upper and lower limits of a calculation based on an uncertain measurement.
Perhaps that would help?