User:Maralia/FA audits

16 Nov 2012
WP:FA says we have 3,740 FAs, but the number is incremented manually and subject to errors. To verify it, I checked each article in Category:Wikipedia featured articles (populated by articlehistory) against each article in Category:Featured articles (populated by the star template).

I found two anomalies: After fixing both of these issues, the numbers all agree: we have 3,740 FAs.
 * Æthelbald of Mercia was missing a star, apparently inadvertently removed by an editor.
 * WP:FA may say 3,740 articles, but it actually lists 3,741 articles, one of which is a duplicate: Tokyo Mew Mew was mistakenly listed in two sections as a result of this edit, which no one caught.

03 Nov 2013
I did a three-way check of WP:FA, Category:Featured articles, and Category:Wikipedia featured articles. I found four anomalies: The count of 4,093 is correct.
 * Æthelbald of Mercia was again missing its star.
 * 2nd Canadian Infantry Division was promoted at FAC in 2008. In 2012 the article was upmerged into 2nd Canadian Division. It should be properly demoted.
 * Jefferson Davis had a botched articlehistory that prevented it from showing up in one of the FA categories.
 * Ki Hajar Dewantara was falsely marked with the FA star.

Repromoted FAs audit, Nov–Dec 2012
In late November 2012 it was discovered that some FAs re-promoted in 2012 had not been properly recorded as such at WP:FFA and given the FA/BeenOnMainPage tag at WP:FA. Discussion took place at User_talk:SandyGeorgia/arch90 and at Wikipedia talk:FAC. Several people helped bring both pages up to date.

FAs without ArticleHistory audit, 06 Mar 2013
I found two anomalies:
 * an AH broken due to vandalism; and
 * an article falsely tagged as FA.

Articles with the template but not listed at WP:FA, and the reverse, Aug 2014
Several discrepancies were noted and fixed by others, as discussed here.

Numbers reconciliation and falsely marked FAs, Nov–Dec 2014
More discrepancies addressed here.