The Grouping Analysis tool groups features based on feature attributes as well as optional spatial/temporal constraints. The output of this tool is the creation of distinct groups of data where the features that are part of the group are as similar as possible and between groups are as dissimilar as possible. The tool is capable of multivariate analysis and the output is a map and a report. The output map can have either contiguous groups or non-contiguous groups. With contiguous groups, there is an added spatial component that can limit the effectiveness of the results. The creation of sales territories would be an example of a contiguous group. When groups are created in a non-contiguous manner, we allow the data to speak for itself without the introduction of a spatial limiter.

The output from the Grouping Analysis tool consists of a map along with a box plot, as shown in the following screenshot. By itself, the map doesn't tell you a whole lot. Obviously...