CREATE TABLE Lives_in (stuid NUMBER, dormid NUMBER, room_number NUMBER)
CREATE TABLE Dorm_amenity (amenid NUMBER, amenity_name VARCHAR2)
CREATE TABLE Student (StuID NUMBER, LName VARCHAR2, Fname VARCHAR2, Age NUMBER, Sex VARCHAR2, Major NUMBER, Advisor NUMBER, city_code VARCHAR2)
CREATE TABLE Dorm (dormid NUMBER, dorm_name VARCHAR2, student_capacity NUMBER, gender VARCHAR2)
CREATE TABLE Has_amenity (dormid NUMBER, amenid NUMBER)

Find the average age for students with different sex in a bar chart, could you list Y from high to low order?
SELECT Sex, AVG(Age) FROM Student GROUP BY Sex ORDER BY AVG(Age) DESC
SELECT "Sex", AVG("Age") FROM "Student" GROUP BY "Sex" ORDER BY AVG("Age") DESC