What is the actual definition of expanded uncertainty?

What is the actual definition of expanded uncertainty? Correct Answer Quantity defining an interval about the measurement result

The quantity that defines an interval about the measurement outcome which can be expected to include a large portion of the distribution of values that could be attributed to the measurand.

Related Questions

What is the relation of expanded uncertainty with coverage factor and combined uncertainty?
The uncertainty of a ball is given by 0.5A°. Then calculate the uncertainty in momentum.
Uncertainty in the distance between transmitter and receiver translates into uncertainty in