Average IQ is 100. That's kind-of the definition.
Average IQ for a white male is 100. That's kind of the problem with IQ tests.
True, but the overall average doesn't really trend that low. IQ is also a terrible metric to use anyway, since it's a measurement of learning rate (mostly memory retention) and not really any kind of relative or absolute measurement of inate intelligence or ability. It was never actually intended to be used in that manner, and was developed to evaluate people with mental disabilities. This is one reason why we all know people with strangely high IQ test scores that don't actually do better than most in any practial situation. A much better metric is percentile, which (by definition) the average is always 50% among one's age peers. The variation among races (or cultures, as that is most likely the greater cause in differences between a young Jewish kid in NYC and a young black kid in Detroit) is much more muted, and varies about +- 1%. A wonderful example of this is my own brother, who has Asburger's Syndrome. He tests at an IQ level above 140, but in a percentile range of about 65-70%; depending upon the test used. Taking the same tests, I once clocked in with an IQ of 136 and a percentile of 98%. I scored a 30 on the ACT heading into college in the 1980's, while my brother scored an 18 (19 maybe? can't remember exactly) and barely squeked in. The difference being is that my brother can retain facts easily, and manage known proceses effortlessly (like math) so his 'rate of learning' is very high, but he cannot really reason his way through a word problem; thus he can't really think in any practical way. So his percentile scores are impacted.
And yes, I'm a bit OCD, and thus imprecision in the use of terms drives me nuts, so I have to respond. You may now return to your ongoing argument.