In both figures, the name of the cluster is displayed on the horizontal axis and the number of clusters is displayed on the vertical or height axis. Clusters exist at each level of the diagram. As you proceed up the diagram one level, the number of clusters is two. First, the AXIS1 statement is defined. Next, the TREE procedure is invoked.
Clusters exist at each level of the diagram, represented by horizontal line segments.
Each vertical line segment represents a point where leaves and branches are connected into progressively larger clusters. For example, three clusters are formed at the left-most point along the axis where three horizontal line segments exist. At the next clustering level the variables Fish and Starch are clustered with variables RedMeat through Milk , resulting in a total of two clusters. The proportion of variance explained is about 0.45 at that point. All rights reserved.