Had they asked something along the lines of "Sex: Man/Woman?" or allowed for an LGBTQ (etc.) answer, the answers would have been more useful. Of course, it is often a good idea to ask a question, only if you are looking for a way to use the information.
It's really sloppy for an MIT survey to half-ass a question like that.
I'm sure I'm getting some terminology wrong, but this is the gist of it.
Other could be somewhere on the spectrum between male and female without quite feeling comfortable calling yourself either. (Transgender, maybe even pre-op or post-op gender change.) Or it could mean asexual.
"Asexual" isn't the term you're looking for -- asexuality has no more to do with what gender you identify as than heterosexuality, bisexuality, etc. do. The concepts might be related for some people, but they aren't inherently so.
I believe it is simply "agender".
I've also heard the word "neutrois" for a third gender neither male nor female, but that's not quite the same as no gender.
