This will tell you the average reputation of all users.
Q&A for professional and enthusiast programmers
-- Enter Query Title
-- Enter Query Description
DECLARE @MinimumReputation int = ##MinimumReputation##
SUM(Reputation) AS "Total Reputation",
COUNT(Id) AS "User Count",
SUM(Reputation) / COUNT(Id) AS "Average Reputation"
Reputation >= @MinimumReputation;