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

Find the average age for students with different sex in a bar chart, and list by the bar in ascending please.
SELECT Sex, AVG(Age) FROM Student GROUP BY Sex ORDER BY Sex
SELECT "Sex", AVG("Age") FROM "Student" GROUP BY "Sex" ORDER BY "Sex" NULLS FIRST