The next logical step would be to look inside the groups.
Say, we found that Chinese, on average, got better off, Mexicans, on average, got worse. Excellent. But surely some Chinese got worse and some Mexicans got better. That's where the answer may be. What did these people do that might explain the difference?
Say, we found that Chinese, on average, got better off, Mexicans, on average, got worse. Excellent. But surely some Chinese got worse and some Mexicans got better. That's where the answer may be. What did these people do that might explain the difference?