Definitions
Fragment of a discussion from Talk:Editor Trends Study
Dear Piotrus,
I will briefly answer your questions:
1) "In the month of the 10th edit" does not refer to October but refers to when a person makes his/her 10th edit. 10 is a threshold, the definition suggest that you are a New Wikipedian when you make 10 edits since the moment you registered.
2) You are concerned that the tresholds are too low: we will stick to the current tresholds but I will post some histograms to show the distribution of edits and that can possibly help us in refining these thresholds.
3) Thank you for pointing me at Interiot's edit counter, I will have a look.