For what it's worth, I'm not one of the downvoters but as much as it its an honest question, it also has obvious answers. If you bucket by age/gender/race you will immediately be accused of ageism, sexism and racism. Your statistical model can even be 99.9% accurate too and it won't even matter because it will take just that 0.1% walking into an elevator, becoming offended, posting about it on Twitter and it blowing up in your face.