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CompTIA DY0-001 Exam - Topic 2 Question 21 Discussion

The most likely concern with a one-feature, machine-learning model is high error due to:
A) bias
B) dimensionality.
C) variance.
D) probability.

CompTIA DY0-001 Exam - Topic 2 Question 21 Discussion

Actual exam question for CompTIA's DY0-001 exam
Question #: 21
Topic #: 2
[All DY0-001 Questions]

The most likely concern with a one-feature, machine-learning model is high error due to:

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Suggested Answer: A

A model with only one feature is unlikely to capture the true complexity of the data's underlying relationships, leading to systematic underfitting - i.e., high bias.


by Gail at Jun 21, 2026, 09:50 AM

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Tanesha
4 hours ago
I lean towards A) bias too, especially since one feature might not capture the complexity of the data.
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Vincent
5 days ago
This feels similar to a practice question we did on model evaluation. I think it could be B) dimensionality, but I'm not confident.
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Felicidad
10 days ago
I'm not entirely sure, but I remember something about variance being a concern in more complex models.
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Lucia
16 days ago
I think the answer might be A) bias, since a one-feature model could oversimplify the problem.
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