instruction: questoins without accepted answer in buckets of rep.
response: SELECT FLOOR(2 * LOG10(Users.Reputation) + 1) / 2, COUNT(*) FROM Posts INNER JOIN Users ON Users.Id = Posts.OwnerUserId WHERE Posts.AcceptedAnswerId IS NULL AND Posts.AnswerCount > 0 GROUP BY FLOOR(2 * LOG10(Users.Reputation) + 1) / 2 ORDER BY FLOOR(2 * LOG10(Users.Reputation) + 1) / 2