Erik Zachte probably has figures on this somewhere.
 
http://stats.wikimedia.org/EN/SummaryEN.htm gives a monthly count for March 2013 of 4,775,756 but that is only for article edits.
 
Historic and particularly pre Dec 2004 figures need to come with a health warning that some of the early stuff was lost. Though possibly some or all of that may have been found and reloaded.
 
Post 2009 you have the problem that things are understated by an unknown margin as an increasing proportion of vandalism edits are deterred by the edit filter. And when we lose the vandalism we also lose the edits that used to be needed to revert it.
 
http://stats.wikimedia.org/EN/ChartsWikipediaEN.htm#3 could be a useful chart for you. It shows the all time peak in early 2007 and that March 2013 was as someone said an unusual spike. However it is also article space only, if you hear other figures circa 200,000 a day or above then they are almost certainly including other namespaces such as policy and userspace edits.
 
Jonathan 

On 7 May 2013 19:09, Jodi Schneider <jschneider@pobox.com> wrote:
Thanks -- that's exactly what I was looking for, Dario! :) -Jodi

On Tue, May 7, 2013 at 6:39 PM, Dario Taraborelli <dtaraborelli@wikimedia.org> wrote:
Hi Jodi

see attached, the median of daily enwiki edits (all namespaces, including bots and anonymous edits) in 2013 to date is 127K. (data from the RecentChanges feed)



HTH
Dario


On May 7, 2013, at 10:22 AM, Jodi Schneider <jschneider@pobox.com> wrote:

What's the average number of edits per day on English Wikipedia?

This is to frame my dissertation research -- I haven't found "edits per day" in the stats I've looked at [1][2]. 

-Jodi




PS: There are other measures of work and importance I've collected.

From the (highly recommended!) "edit sessions" paper, I get ~14,000 hours per day [3].
Alexa & Pew provide good popularity measures [4,5], and there is of course article count (4.2 million!).


[3] R. Stuart Geiger and Aaron Halfaker. 2013. Using edit sessions to measure participation in Wikipedia. DOI=10.1145/2441776.2441873 

Using the ballpark 425,000 hours/month (for 2012, English Wikipedia). Wow!

[4] Alexa: wikipedia.org is the world's 6th most popular website, 58.11% of traffic to English Wikipedia.

[5] Pew: 53% of American Internet users look for info in Wikipedia (as of May 2010). "The percentage of all American adults who use Wikipedia to look for information has increased from 25% in February 2007 to 42% in May 2010. This translates to 53% of adult internet users. "
http://www.pewinternet.org/Reports/2011/Wikipedia.aspx

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