Salary varies greatly depending on the studio, position, and location.
The averages you're looking at are averages for California. $60k may sound like a lot but it's barely livable there.
So if your friend is thinking of being a tester, he'll get minimum wage plus extra for overtime. If he manages to beat out all the other testers looking for the lead spot he'll actually get salary (which I have no idea what it is, but nothing impressive).
If you're friend is wanting to become some sort of designer he should also be prepared for fairly low pay. You'll work hard just like in any of the disciplines but design is such a wide skill set so there's a lot of competition. A lot of competition means they can pay you low. If your friend is looking to become some sort of designer he shouldn't expect to get anywhere near that average even in California at one of the big studios. I believe starting salary for a designer in California is somewhere around $45-50. In Texas it's even less but in my case, I'm actually making good money now and I have excellent benefits so I'm happy.^^
For an artist, it's pretty much the same as above but they usually get paid slightly more in the long run I believe.
If he's going into programming, he'll be much closer to that average number (I think starting salary for a programmer in California is something like $55k on the lower end) but he has to be awesome.
In short whatever discipline he gets into, he should be prepared for lower than average pay and very long hours, in return, he gets to be one of the few people that loves his job.
Just curious, how does your friend plan to get his foot in the door and what does he want to do?