Introduction
Accuracy, repeatability, resolution and stability are terms that are often confused. This sheet provides definitions of these terms.
| Term | Description | Visual representation |
|---|---|---|
| Accuracy | Accuracy describes how close the mean result is to the reference value. |  |
| Repeatability | Repeatability describes the variation between results. It is often expressed as a standard deviation. | |
| Resolution | The resolution of a system is equal to the smallest incremental step that can be made. |  |
| Stability | 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. |  |