Question: In hierarchical clustering, what is the result of the agglomerative approach?

Options:

1. Clusters are formed by splitting larger clusters
2. Clusters are formed by merging smaller clusters
3. Clusters are formed randomly
4. Clusters are formed based on a predefined number

Correct Answer: Clusters are formed by merging smaller clusters

Solution:

The agglomerative approach in hierarchical clustering starts with individual data points and merges them into larger clusters based on similarity.