Now a simple rule of thumb is to just look at your data and think about the number of rows and the number of columns. And we have three rows and two columns. And so your degrees of freedom are going to be the number of rows minus one, three minus one, times the number of columns minus one, two minus one. And so this is going to be equal to two times one, which is equal to two. Now the reason why that makes intuitive sense is think about it. If you knew two of these data points, and if you knew all of the totals, then you could figure out the other data points. If you knew these two data points, you could figure out that.