Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE PersonFriend ( name varchar(20), friend varchar(20), year INTEGER )
TABLE: CREATE TABLE Person ( name varchar(20), age INTEGER, city TEXT, gender TEXT, job TEXT )

### Question ###
Return a histogram on how old is the average person for each job?, and display by the X-axis in asc.

### Accurate SQL ###

SELECT job, AVG(age) FROM Person GROUP BY job ORDER BY job