SELECT
TOP 100
Users.Id as [User Link],
Count(Posts.Id) AS Answers,
CAST(AVG(CAST(Score AS float)) as numeric(6,2)) AS [Average Answer Score]
FROM
Posts
INNER JOIN
Users ON Users.Id = OwnerUserId
WHERE
PostTypeId = 2
GROUP BY
Users.Id, DisplayName
HAVING
Count(Posts.Id) > 400
ORDER BY
[Average Answer Score] DESC