Yes, Patriarchy Is Dead; the Feminists Prove It

[Major Nikon]

50. It's not hard to find where the bias comes in with AAUW

But in 2009—the most recent year for which data are available—women one year out of college who were working full time earned, on average, just 82 percent of what their male peers earned. After we control for hours, occupation, college major, employment sector, and other factors associated with pay, the pay gap shrinks but does not disappear. About one third of the gap cannot be explained by any of the factors commonly understood to affect earnings, indicating that other factors that are more difficult to identify—and likely more difficult to measure—contribute to the pay gap.

Means the same thing as saying, 'the unexplained part of the pay gap is about 6%'.

Both discrimination and cultural gender norms can play a role in the “explained” portion of the pay gap.

Which is the same thing as saying they may not.

Taking a closer look at the data, we find that women’s choices—college major, occupation, hours at work—do account for part of the pay gap. But about one-third of the gap remains unexplained, suggesting that bias and discrimination are still problems in the workplace.

What you have to dig for is that there are other factors which contribute to the pay gap which are difficult, if not impossible to measure, which means that the 6% mentioned (duplicitously) could (and almost certainly does) contain a significant portion which is not due to discrimination.

Another possible explanation for the unexplained portion of the pay gap is a gender difference in willingness and ability to negotiate salary.

So as an afterthought, they do actually allude to one other possibility, but fail to mention other things like trading pay for fringe benefits, work experience and job tenure, which are specifically mentioned as unmeasurable in other studies.

So when you actually read and understand the study, you find out the actual gender pay gap is "about" 6%, some of which may (or may not) be due to illegal discrimination.