Earlier quoted context omitted.
What do you call a stereotype when it is backed by statistical data? The a priori belief that is most common is that no stereotypes are true. It's the polite thing to believe. But if you are of a certain analytical mindset, you can be argued out of it with enough data and anecdotal evidence from friends.
An oxymoron :-), i.e. stereotypes are by definition not backed by reliable data ( http://www.merriam-webster.com/dictionary/stereotype )
And what if said assessment is correct in 90% of the cases - how do the 10% for whom it fails would feel?