The whole study (behavior+gender correlation) is biased. I didn’t see the colors on the other screen anyway.

For the case you had issues with understanding the log thing:

• log(males/females) = -2 means 1:100
• log(males/females) = -1 means 1:10
• log(males/females) = 0 means 1:1
• log(males/females) = 1 means 10:1