Correct. Just goes to show that if you can master something useful (except for the government major), you will earn more than if you excel in the useless.
I wonder where plumbers, electricians, and other skilled trades would fall on that scale. I suspect they'd be fairly high, or at least they would have scored high before the illegals flooded the home-building market in some areas.
Illegals may be good for hanging sheet rock, but can't get their minds around wiring a building. I know a 37 year old electrician who made $220,000 last year (his wife has a big mouth). The immigrants that have taken the time to learn plumbing or electrical work tend to be legal and have been here awhile.