So we calculated that the mean is three. So the mean is three. So when we measure it by the mean, the central point or measure of that central point, which we use as the mean, well, it looks the same, but the data sets look different. And how do they look different? Well, we've talked about notions of variability or variation and it looks like this data set is more spread out. It looks like the data points are on average further away from the mean than these data points are. And so that's an interesting question that we ask ourselves in statistics.