If so, please provide a concrete example.
Topic on Talk:Wikistats 2.0 Design Project/RequestforFeedback/Round1/Detail page single wiki
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It is quite useful to compare # of active users at different levels of activity (1+, 5+, 100+ etc.) or page views of different types (mobile / desktop / total) in the same visualisation. It is OK not to implement it if easy downloading is implemented.
+ 1 to NickK
Also, it is useful to compare newly registered editors and editors retained.