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. We just don't want a measure of center like the mean. We might also want a measure of variability. And one of the more straightforward ways to think about variability is, well, on average, how far are each of the data points from the mean?