SELECT avg(t1.age) ,  avg(Years_working) ,  t2.work_type FROM journalist AS t1 JOIN news_report AS t2 ON t1.journalist_id  =  t2.journalist_id GROUP BY t2.work_type
Find the average age and experience working length of journalists working on different role type.
SELECT avg ( t1.age ) , avg ( Years_working ) , t2.work_type FROM journalist AS t1 JOIN news_report AS t2 ON t1.journalist_id = t2.journalist_id GROUP BY t2.work_type
select avg ( t1 . age ) , avg ( years_working ) , t2 . work_type from journalist as t1 join news_report as t2 on t1 . journalist_id = t2 . journalist_id group by t2 . work_type
Find the average age and experience working length of journalists working on different role type .