And notice, you're a little bit less likely to get values close to 0, and a little bit more likely to get numbers further out, but it still is kind of shifted, or heavily weighted, towards small numbers. And then if we had another random variable, another chi squared distributed random variable, so then we have, let's say, q3, and let's define it as the sum of 3 of these independent variables, each of them that have a standard normal distribution. So x1, x2 squared, plus x3 squared. Then all of a sudden, our q3, this is q2 right here, has a chi squared distribution with 3 degrees of freedom. And so this guy right over here, that will be this green line, maybe I should have done this in green. This will be this green line over here. And then notice, now it's starting to become a little bit more likely that you get values in this range over here, because you're taking the sum.