Intermediate
Artificial Intelligence & Machine Learning
Q67 / 100
What is the elbow method used for in clustering?
Correct! Well done.
Incorrect.
The correct answer is B) Plotting within-cluster sum of squares against the number of clusters k and choosing the k where the improvement sharply diminishes, forming an elbow shape
B
Correct Answer
Plotting within-cluster sum of squares against the number of clusters k and choosing the k where the improvement sharply diminishes, forming an elbow shape
Explanation
The elbow method helps pick a reasonable k for k-means by plotting inertia (within-cluster variance) versus k. The point where adding more clusters yields diminishing returns ("the elbow") is a good candidate for k. The silhouette score is a complementary technique.
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