When asking heterosexual men and women anonymously about the number of sex partners they had, the result is quite apparent.
The mean for men is absurdly higher than the median for women (e.g. here).
This obviously cannot be, there is a bias.
The first thing that comes to mind, is that men write a higher number than women.
I was thinking of normalizing the data by forcing the men distribution to have the same median as women.
However, this will not account for selection bias (for example if virgin men chose not to participate in the survey).
What is the common practice to cleanup / align this kind of sensitive data ?