This is because IQ tests are not constructed on the basis of any scientific model of intelligence: they are simply created (by statistical manipulation of item content) to identify individuals who have already been deemed to be 'intelligent' by other, more subjective, criteria.
Your syllogism is one of the dumbest I have ever came across. Trying to support your racism with uncorrelated arguments makes it even worse. A couple of advice: read books and get an education. Your parents should not have been allowed to fornicate.
