[baroffoos]

This also makes me wonder if they house had any relevance at all other than a publicly available show of approximate income. If the researchers had access to all of the incomes of the people they researched would they have been able to build the exact same predictions or were more factors involved like rural/inner city drivers having different results.

[jl2718]

That's kind of my point. Conditioned upon the right set of variables, they could have probably come up with the opposite 'prediction'.