Yes, that can be due to deleted articles. The stats are calculated on the current dumps, and these do not include deleted articles.



2013/3/17 Jan Ainali <jan.ainali@wikimedia.se>
Well, that makes sense when there is an increase. But looking on my screenshot from December I can see that in October 2012 there was 152 new Wikipedians. One month later they have decreased to 151. Can that be due to deleted articles that "sends them below the bar" again?

Med vänliga hälsningar,
Jan Ainali

Wikimedia Sverige 
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2013/3/17 Andrew Gray <andrew.gray@dunelm.org.uk>
On 17 March 2013 13:55, Jan Ainali <jan.ainali@wikimedia.se> wrote:
>
> How come the historical statistics vary over time? Last month I looked at
> the statistics for Swedish Wikipedia and it had 132 new Wikipedians in
> December 2012 and 142 for November. When the January stats came now it says
> it was 139 in December and 144 in November. How is that possible?

"New Wikipedians" counts people who have edited at least ten times
since registering an account; however, they don't have to make all ten
edits in that month.

http://stats.wikimedia.org/EN/TablesWikipediansNew.htm

So if someone registers in December and makes two edits, they won't
show up on that list; if they come back in January and make eight
more, then when the stats are recalculated they'll show up as a new
user for December.

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- Andrew Gray
  andrew.gray@dunelm.org.uk

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