obviously you're saying you know why do we need unsupervised algorithms if we can just see this but in a multi dimensional problem so here we've just got two variables if we have like 50 you can't see this with your own eyes when there's outliers like that but you can use an algorithm to cluster your data and then if we have data points that are so far away from the center of a cluster and I cluster is a group here so you can see them in the graph as well if we have something that's so far away from a cluster then we know it's probably an