Microsoft AI-900 Exam - Topic 4 Question 98 Discussion

Actual exam question for Microsoft's AI-900 exam

Question #: 98
Topic #: 4

[All AI-900 Questions]

During the process of Machine Learning, when should you review evaluation metrics?

AAfter you clean the data.

BBefore you train a model.

CBefore you choose the type of model.

DAfter you test a model on the validation data.

Show Suggested Answer

Suggested Answer: D

by Lamar at Jan 05, 2026, 05:16 AM

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Vashti

13 days ago

A is important too, but I feel D is crucial after testing.

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Casie

18 days ago

I lean towards C. Choosing the model type should consider metrics too.

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Marla

23 days ago

I agree, D makes sense. Evaluation metrics show real performance.

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Roy

29 days ago

I think D is the best choice. You need to see how the model performs first.

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Shawna

1 month ago

Metrics matter at every stage, but especially before model selection!

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Essie

1 month ago

I disagree, it should be reviewed before training too.

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Tina

1 month ago

Surprised that people don’t mention it after cleaning the data!

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Daron

2 months ago

I think it’s more important after testing on validation data.

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Kirby

2 months ago

Definitely before you choose the type of model!

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Launa

2 months ago

This question is a piece of cake. I could answer it in my sleep!

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Jennie

2 months ago

D) After you test a model on the validation data. Duh, how else are you gonna know if it's any good?

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Aileen

2 months ago

A) After you clean the data. Gotta make sure it's all nice and tidy first.

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Catherin

3 months ago

C) Before you choose the type of model. Helps you pick the right one for the job.

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Carole

3 months ago

B) Before you train a model. Gotta know what you're aiming for, right?

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Laine

3 months ago

D) After you test a model on the validation data. That's when you can really see how well it's performing.

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Helaine

4 months ago

I practiced a question similar to this, and I think the right time is after cleaning the data. But I could be mixing it up with another concept!

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Kassandra

4 months ago

I feel like we should consider metrics before choosing the type of model. Different models might require different evaluation criteria, but I can't recall exactly.

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Emelda

4 months ago

I'm not too sure, but I remember something about checking metrics after testing on validation data. That seems important for understanding performance.

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Renay

4 months ago

I think we should review evaluation metrics before we train a model, right? It helps to know what we're aiming for.

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Jonell

4 months ago

Reviewing the metrics at multiple stages seems important - before the model, during training, and after validation. Gotta make sure the model is on the right track.

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Nan

4 months ago

I'm a bit confused on this one. Is it after cleaning the data or before choosing the model? I'll have to think it through carefully.

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Charlie

5 months ago

Definitely before training the model. You need to know what you're optimizing for before you start the training process.

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Jenelle

5 months ago

Hmm, I'm not sure. I guess I'd review the metrics after testing the model on the validation data, to see how well it's performing.

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Rosalia

5 months ago

I think I'd review the evaluation metrics before choosing the model type. That way I can pick the right model for the task based on the data.

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