How stats work.

As a minor point in a recent blog post Ben Radford included this remark.

"Except that I didn't; Myers misread it. I actually didn't write the "one billion" figure that Myers misquotes me as saying; that was Ensler's number. What I actually wrote (check it yourself) was that "one-third of women [have been victims of] homicide, intimate partner abuse, psychological abuse, dating violence, same-sex violence, elder abuse, sexual assault, date rape, acquaintance rape, marital rape, stranger rape and economic abuse." (One in three women is not the same as one billion if you do the math, though perhaps that's just my hyperskepticism.)"

Seeing as it was an easy calculation I followed this up in the comments section with a quick back of the envelope calculation.

7billion people on earth x 1/2 women X 1/3 facing these abuses = 1.16 billion women

The math was simple 7/6 or 3.5/3 or about 1. So I'm really not sure where Ben got the idea that 1/3 wasn't 1 billion. So I left in the comments got no reply no correction was made and the comments ( including some by Radford) ignored it. OK fine it was there for anyone to see. I wake up this morning and Michael Kingsford Gray has  responded to my calculation.