Still, I have to face the fact that if I want to major in, say, applied math, chances are I might be lonely or below-average or both.
As long as you know your own skills, there is no need to use your gender as a predictor. We use the worse information only in the absence of better information; because the worse information can be still better than nothing. We don't need to predict the information we already have.
When we already know that e.g. "this woman has IQ 150", or "this woman has won a mathematical olympiad" there is no need to mix general male and female IQ or math curves into the equation. (That's only what you do when you see a random woman and you have no other information.)
If there are hundred green balls in the basket and one red ball, it makes sense to predict that a randomly picked ball will be almost surely green. But once you have randomly picked a ball and it happened to be red... then it no longer makes sense to worry that this specific ball might still be green somehow. It's not; end of story.
If you had no experience with math yet, then I'd say that based on your gender, your chances to be a math genius are small. But that's not the situation; you already had some math experience. So make your guesses based on that experience. Your gender is already included in the probability of you having that specific experience. Don't count it twice!
If you've recently joined the Less Wrong community, please leave a comment here and introduce yourself. We'd love to know who you are, what you're doing, what you value, how you came to identify as a rationalist or how you found us. You can skip right to that if you like; the rest of this post consists of a few things you might find helpful. More can be found at the FAQ.
A few notes about the site mechanics
A few notes about the community
If English is not your first language, don't let that make you afraid to post or comment. You can get English help on Discussion- or Main-level posts by sending a PM to one of the following users (use the "send message" link on the upper right of their user page). Either put the text of the post in the PM, or just say that you'd like English help and you'll get a response with an email address.
* Normal_Anomaly
* Randaly
* shokwave
* Barry Cotter
A note for theists: you will find the Less Wrong community to be predominantly atheist, though not completely so, and most of us are genuinely respectful of religious people who keep the usual community norms. It's worth saying that we might think religion is off-topic in some places where you think it's on-topic, so be thoughtful about where and how you start explicitly talking about it; some of us are happy to talk about religion, some of us aren't interested. Bear in mind that many of us really, truly have given full consideration to theistic claims and found them to be false, so starting with the most common arguments is pretty likely just to annoy people. Anyhow, it's absolutely OK to mention that you're religious in your welcome post and to invite a discussion there.
A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site.