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CompTIA DY0-001 Exam - Topic 5 Question 18 Discussion

Actual exam question for CompTIA's DY0-001 exam
Question #: 18
Topic #: 5
[All DY0-001 Questions]

A data scientist is clustering a data set but does not want to specify the number of clusters present. Which of the following algorithms should the data scientist use?

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Suggested Answer: A

DBSCAN discovers clusters based on density without requiring you to predefine the number of clusters, automatically finding arbitrarily shaped groups and identifying noise points.


by Sheridan at May 07, 2026, 11:35 AM

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Junita
17 days ago
I feel like I've seen a question like this before, and I think it was about density-based clustering, which points to DBSCAN.
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Elbert
22 days ago
I'm not entirely sure, but I remember k-means requires you to define the number of clusters, so it can't be the answer.
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Carlota
28 days ago
I think DBSCAN is the right choice since it can find clusters without needing to specify the number of them upfront.
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