CREATE TABLE table_name_94 (yards INT, long VARCHAR, avg VARCHAR)

How many yards were averaged by the player that had a higher than 13 average with less than 18 long?
SELECT AVG(yards) FROM table_name_94 WHERE long < 18 AND avg > 13
SELECT AVG("yards") FROM "table_name_94" WHERE "avg" > 13 AND "long" < 18