Final answer:
Re-testing Group clients is important to eliminate confounding factors and obtain reliable results.
Step-by-step explanation:
In order to tell a great "data story" in the Exerbotics® Reports, it is important to continue re-testing Group clients. This is because re-testing helps eliminate confounding factors and ensures that any improvement observed is not due to other variables such as software. By re-testing, researchers can obtain more reliable and valid results.
Learn more about re-testing Group clients