markm56939586,
Here is how I would think about it:
My traffic by visitor not visit is being split 90/10 after that there is no restriction on the number of visits each visitor has so in essence:
90% of visitors generated 85% of total visits.
&
10% of visitors generated 15% of total visits.
If you let the activity run for longer and wait for a lot more visitors I bet these numbers will gravitate closer and closer towards 90% 10% distribution just like the visitors. Hope this helps!
Mihnea Docea | Technical Support Rep, Customer Care | Customer & Employee Experience | Adobe | (:: 1 (800) 497-0335