4 ms·
Regardless of where the "average" intelligence level (As measured by IQ tests) is for any specific race/ethnicity/etc, all the data I've seen so far shows far m
by AcerbicZero 9y ago
Regardless of where the "average" intelligence level (As measured by IQ tests) is for any specific race/ethnicity/etc, all the data I've seen so far shows far more variation inside each group than between groups. For example, a group might have an average of ~100, and another ~90, but inside each group you have individuals varying between ~60 and ~180.
The point I guess I'm trying to make is that people are individuals, and should be treated as such.
- swebs 9y agoGot a link to those studies?
- xyzzyz 9y agoYes, but if the variance is the same in both groups, then in the group with higher mean you might have orders of magnitude more people above certain cut-off. For example, suppose you have two groups, each one consisting of 1 billion people. Both groups have standard deviation of 15 IQ, but the mean of group 1 is 90, and the mean of group 2 is 100. Then, the IQ of 160 is 4 sigma above the mean of group 2, but 4.6 sigma above mean of group 1. This results in 31670 people above 160 IQ in group 2, but only 1531 people above 160 in group 1. With your cut-off of 180 IQ, only 1 individual out of 1 billion from group 1 will have IQ above 180, but almost 50 in group 2. Of course, each individual should be treated as such, but you have to take things like above into account if you are wondering for example why so many top sprinters are of certain genetical ancestry.
- deleted 9y ago[deleted]