Accuracy, repeatability, resolution and stability are terms that are often confused. This sheet provides definitions of these terms.
|Accuracy describes how close the mean result is to the reference value.
|Repeatability describes the variation between results. It is often expressed as a standard deviation.
|The resolution of a system is equal to the smallest incremental step that can be made.
|The stability of a system is the deviation from a constant reference value over a long time (typically >10 seconds). When specifying the stability, the corresponding timescale has to be specified as well.