Q&A for professional and enthusiast programmers
SELECT u.Id AS [User Link], Count(*) AS [Answer count], Min(Len(p.Body)) AS [Min], Avg(Len(p.Body)) AS [Average], Max(Len(p.Body)) AS [Max], Var(Len(p.Body)) AS [Variance], Stdev(Len(p.Body)) AS [StDev] FROM Users u, Posts p WHERE p.OwnerUserId = u.Id AND p.PostTypeId = 2 AND (SELECT Count(*) FROM Posts q WHERE q.OwnerUserId = u.Id AND p.PostTypeId = 2 GROUP BY q.OwnerUserId) >= 10 GROUP BY u.Id ORDER BY [Average]