Anyone with a pulse for the past 20 years should be aware of this.
I’m not going to do your homework for you.
RE: I’m not going to do your homework for you.
Nope, the onus is on you who say you doubt the data to show us why the data presented is not right. That is, if you want to convince the readers of this thread. If not, well, consider me unconvinced (yet).
As for the 18 point differential in the table, doesn’t that show that people with doctorates earn more in the private sector than Federal? Why is that not right?