Repeatability — or variation in repeated measurements on the same subject under identical conditions over a short period of time — is important because it directly affects the agreement between methods. To assess repeatability, two or more measurements by each method on each subject must be made.

What is the importance of repeatability and reproducibility in measurement?

repeatability measures the variation in measurements taken by a single instrument or person under the same conditions, while reproducibility measures whether an entire study or experiment can be reproduced in its entirety.

Why is repeatability more important than accuracy?

Repeatability – describes how well a system or device can reproduce an outcome in unchanged conditions. In some applications, repeatability is more important than accuracy. If the system is repeatable, an error can be mapped and compensated for. ... A system can have a high resolution with poor repeatability and accuracy.