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What is the Elbow point in an Elbow plot?
What is the Elbow point in an Elbow plot?
- The point where each point is in a separate cluster.
- The point where all points are in one cluster.
- The point where WCSS rapidly changes, creating an elbow shape (correct)
- The point where WCSS starts to move almost parallel to the X-axis.
What is the main issue when we do not know K in K-means algorithm?
What is the main issue when we do not know K in K-means algorithm?
- Need to determine the number of iterations
- Need to determine the cost function
- Need to determine the optimum clustering (correct)
- Need to determine the number of clusters
What is the significance of the Elbow point in the Elbow plot?
What is the significance of the Elbow point in the Elbow plot?
- It marks the highest value of WCSS.
- It marks the point where the WCSS starts to increase rapidly.
- It marks the point where WCSS starts to move almost parallel to the X-axis. (correct)
- It indicates the lowest value of K.
What is the optimal K value in an Elbow plot?
What is the optimal K value in an Elbow plot?
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What is the best method to determine the optimum value of K?
What is the best method to determine the optimum value of K?
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What happens when K=N in the Elbow plot?
What happens when K=N in the Elbow plot?
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What is the cost function for each clustering in K-means algorithm?
What is the cost function for each clustering in K-means algorithm?
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At what value of K is the WCSS the largest in the Elbow plot?
At what value of K is the WCSS the largest in the Elbow plot?
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What happens to WCSS as K increases in an Elbow plot?
What happens to WCSS as K increases in an Elbow plot?
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