And actually, the other thing we have to figure out is the degrees of freedom. The degrees of freedom here, we're taking 1, 2, 3, 4, 5, 6 sums. So you might be tempted to say the degrees of freedom are 6. But one thing to realize is that if you had all of this information over here, you could actually figure out this last piece of information. So you actually have 5 degrees of freedom. When you have just kind of n data points like this, and you're measuring kind of the observed versus the expected, your degrees of freedom are going to be n minus 1, because you could figure out that nth data point just based on everything else that you have, all of the other information. So our degrees of freedom here are going to be 5.