Does Area 51 include also closed questions, in its statistics? For example, is the number of answers per question reported for a site in beta influenced by closed questions, or those questions are not considered?
We use numbers returned by the public /stats api, e.g. http://api.gaming.stackexchange.com/1.1/stats:
answeredPercentage = 100 - (total_unanswered / total_questions * 100); answerRatio = total_answers / (total_questions * answeredPercentage / 100);
But slightly confusingly, the api's return values for
total_answers include closed questions, but
answeredPercentage ("% answered" on the stats page) is actually "percentage of questions that have been resolved" ...either by an answer or by closing.