Which data set is the most clustered around its mean?

Each data set has a mean of 7. To see which is most clustered around its mean, compare how far its values are from 7: set A’s distances are 3, 3, 1, and 1, which are smaller overall than the distances in the other sets. Therefore, A) 4, 10, 8, 6 is the most clustered around its mean.

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