After all the controversy that arose after I posted my breakdown of college majors by gender last week, I promised myself I’d stay away from controversial gender-related topics for a while.

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This brings up an interesting question of how valuable the SAT is as a standardized test across all majors, if a higher SAT score is really only indicating that the student is better at solving quantitative/analytical problems.

Not all majors require a high analytical aptitude, after all.

Some of my readers requested the R^2 for the above plots.

But if we break down the SAT score by Verbal and Quantitative, we see why this IQ estimation is potentially misleading.

If we re-make the first plot against the Verbal SAT score, we see that it’s basically a wash: there’s no correlation between a major’s gender ratio and the average student’s Verbal SAT score.

When we plot the students’ Quantitative SAT score against the major’s gender ratio, we see the negative correlation appear again.This tells us that the original plot is actually showing preference for quantitative majors: The higher the estimated IQ, the more quantitative/analytical the major, and the fewer women enrolling in those majors.By popular request, here’s an interactive version of the above chart: https://plot.ly/~etpinard/330/us-college-majors-average-iq-of-students-by-gender-ratio/ IQs are typically classified as follows: Considering that many of the female-dominated majors heavily involve interpersonal interactions, my initial thought was that this all made sense: Women are widely known to be more socially-inclined and nurturing than men, so we would expect to see them dominate fields that heavily involve people.But how does that explain the drastic IQ differences between male- and female-dominated fields, if the average man and woman have the same IQ?The answer comes from the fact that the IQ score here is estimated from the students’ SAT score.This isn’t an altogether unreasonable approach: Several studies have shown a strong correlation between SAT scores and IQ scores.