CREATE TABLE Plays_Games (StuID INT, GameID INT, Hours_Played INT)
CREATE TABLE Video_Games (GameID INT, GName VARCHAR, GType VARCHAR)
CREATE TABLE SportsInfo (StuID INT, SportName VARCHAR, HoursPerWeek INT, GamesPlayed INT, OnScholarship VARCHAR)
CREATE TABLE Student (StuID INT, LName VARCHAR, Fname VARCHAR, Age INT, Sex VARCHAR, Major INT, Advisor INT, city_code VARCHAR)

Scatter plot to show avg(age) on x axis and minimal age on y axis.
SELECT AVG(Age), MIN(Age) FROM Student GROUP BY Major
SELECT AVG("Age"), MIN("Age") FROM "Student" GROUP BY "Major"