So this 4 and 5, the middle is actually in between these 2. So when you have an even number of numbers like this, you take the middle 2 numbers, this 4 and this 5, and you take the mean of the 2. So the mean of 4 and 5 is going to be 4 and 1 half. So that's going to be the median of our entire data set, 4 and 1 half. Now I want to figure out the median of the bottom half of numbers and the top half of numbers. Here they say exclude the median. Of course I'm going to exclude the median.