Heidi Zahn is a human resources manager currently reviewing data on 98 employees. In the data, each observation consists of an employee’s age and an employee’s performance rating.

a. Heidi applied k-means clustering with k = 2 to the data and generated the following plot to visualize the clusters. Based on this plot, qualitatively characterize the two clusters of employees categorized by the k-means approach.

b. For a comparison, Heidi applied hierarchical clustering with the Euclidean distance and single linkage to the data and generated the following plot based on the level of agglomeration with two clusters. Based on this plot, qualitatively characterize the two clusters of employees categorized by the hierarchical approach.

c. Which of the two approaches (k-means clustering from part (a) or hierarchical clustering from part (b)) would you recommend?

Transcribed Image Text:

Performance Rating k-Means Clustering Solution with k = 2 A Age .