English Wikipedia: Retention Rate vs. Active Editors 2004-2009
<ul><li>Active editors (blue) refers to the number of user accounts making at least 5 edits in that month</li>
<li>Retention rate (red) refers to the percentage of editors who first edited in the specified month and also went on to make any edits 12 months later.</li></ul>
<a href="//commons.wikimedia.org/wiki/User:Howief" class="mw-redirect" title="User:Howief">Howief</a>
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