Databricks Certified Professional Data Scientist Exam - Topic 6 Question 15 Discussion

Actual exam question for Databricks's Databricks Certified Professional Data Scientist exam

Question #: 15
Topic #: 6

[All Databricks Certified Professional Data Scientist Questions]

Under which circumstance do you need to implement N-fold cross-validation after creating a regression model?

AThe data is unformatted.

BThere is not enough data to create a test set.

CThere are missing values in the data.

DThere are categorical variables in the model.

Show Suggested Answer

Suggested Answer: B

by Martina at May 07, 2022, 08:47 AM

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Rosalyn

4 months ago

I thought categorical variables needed special handling, not N-fold.

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Deonna

4 months ago

C is not a reason for N-fold, just clean your data first!

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Talia

4 months ago

Wait, can you really use it for unformatted data? Seems off.

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Rebeca

4 months ago

Totally agree, B is the right choice!

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Nakisha

5 months ago

N-fold cross-validation is great when you lack enough data for a test set.

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Portia

5 months ago

I practiced a question about categorical variables, but I don't think that specifically requires N-fold cross-validation.

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Justine

5 months ago

I feel like missing values could complicate things, but I don't recall if that directly relates to needing N-fold cross-validation.

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Callie

5 months ago

I think we might need it if we can't create a proper test set, like when the data is limited.

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Mozell

5 months ago

I remember that N-fold cross-validation is often used when the dataset is small, but I'm not sure if that's the only reason.

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Amie

5 months ago

This seems like a straightforward question about behavioral principles. I'll carefully read through the options and think about which one best describes the situation presented.

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Georgeanna

5 months ago

C looks like it could be correct. I just can't recall if it includes the right subnet mask.

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Myra

5 months ago

I'm pretty confident about this one. The key is understanding Regulation T and when brokers can overlook amounts due in a customer's account.

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Yolande

5 months ago

Hmm, I'm a bit unsure about this one. Should we be presenting a project charter instead? That might give management a clearer picture of the overall project scope and objectives.

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