Final answer:
A small Mean Absolute Deviation (MAD) tells us that the data values are clustered close to the mean, indicating low variability in the dataset.
Step-by-step explanation:
A small Mean Absolute Deviation (MAD) indicates that the data values in the set are similar (close) to the mean. This suggests there is a low variability amongst the data points, and they tend to be clustered around the mean. In the context of a swim team with MAD = 0.8, it means that the ages of team members are not spread out widely and are close to the average age of the group.