The Describe Clusters dialog box provides information about the models that Tableau computed for clustering. You can use these statistics to assess the quality of the clustering.
When the view includes clustering, you can open the Describe Clusters dialog box by right-clicking Clusters on the Marks card (Control-clicking on a Mac) and choosing Describe Clusters. The information in the Describe Clusters dialog box is read-only, though you can click Copy to Clipboard and then paste the screen contents into a writeable document.
The Describe Clusters dialog box has two tabs: a Summary tab and a Models tab.
These are described in the following table:
|
Number of Clusters |
The number of individual clusters in the clustering. |
|
Number of Points |
The number of marks in the view. |
|
Between-group sum of squares |
A metric quantifying the separation between clusters as a sum of squared distances between each cluster's centre (average value)... |