CREATE TABLE table_27723 ("Institution" TEXT, "Location" TEXT, "Nickname" TEXT, "Founded" FLOAT, "Type" TEXT, "Enrollment" FLOAT, "Joined" FLOAT)

When were the Avenging Angels founded?
SELECT MAX("Founded") FROM table_27723 WHERE "Nickname" = 'Avenging Angels'
SELECT MAX("Founded") FROM "table_27723" WHERE "Nickname" = 'Avenging Angels'