CREATE TABLE department (Department_ID INT, Name TEXT, Creation TEXT, Ranking INT, Budget_in_Billions FLOAT, Num_Employees FLOAT)
CREATE TABLE head (head_ID INT, name TEXT, born_state TEXT, age FLOAT)
CREATE TABLE management (department_ID INT, head_ID INT, temporary_acting TEXT)

Show the average age of heads of departments born in each state with a bar chart, list by the X-axis in desc.
SELECT born_state, AVG(age) FROM head GROUP BY born_state ORDER BY born_state DESC
SELECT "born_state", AVG("age") FROM "head" GROUP BY "born_state" ORDER BY "born_state" DESC NULLS LAST