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SAS A00-240 Exam - Topic 3 Question 58 Discussion

What is a drawback to performing data cleansing (imputation, transformations, etc.) on raw data prior to partitioning the data for honest assessment as opposed to performing the data cleansing after partitioning the data?
D) There is no ability to compare the effectiveness of different cleansing methods.
A) It violates assumptions of the model.
B) It requires extra computational effort and time.
C) It omits the training (and test) data sets from the benefits of the cleansing methods.

SAS A00-240 Exam - Topic 3 Question 58 Discussion

Actual exam question for SAS's A00-240 exam
Question #: 58
Topic #: 3
[All A00-240 Questions]

What is a drawback to performing data cleansing (imputation, transformations, etc.) on raw data prior to partitioning the data for honest assessment as opposed to performing the data cleansing after partitioning the data?

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Suggested Answer: D

by Micaela at Sep 20, 2022, 10:45 AM

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Terrilyn
10 months ago
Yeah, but it also takes more time to do it after, right?
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Louvenia
10 months ago
It omits the training and test data sets from the benefits of cleansing methods.
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Nan
11 months ago
Wait, I thought cleansing was always a good thing?
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Zack
11 months ago
Totally agree, cleansing before partitioning can skew results.
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Junita
11 months ago
It violates assumptions of the model.
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Glory
11 months ago
I wonder if not being able to compare the effectiveness of different cleansing methods is a significant drawback, but I can't recall if that was emphasized in our studies.
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Frederica
11 months ago
I feel like the extra computational effort and time could be a concern, but it seems less relevant compared to the impact on the data sets.
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Leanna
11 months ago
I remember practicing a question about data partitioning, and I think it was mentioned that performing cleansing before partitioning could violate model assumptions.
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Destiny
11 months ago
I think one drawback is that it might omit the training and test data sets from the benefits of the cleansing methods, but I'm not entirely sure.
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Dulce
11 months ago
Okay, let me think this through. We need to restrict access based on the resource and the HTTP method. That means we need to look at both the resource and the action being performed. So I'm going to go with option C, resource and action.
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Irma
12 months ago
Okay, I've got an idea. Since the question is asking about what service consumers' work involves and how technology helps them, I'm guessing the answer is probably related to understanding the customer's perspective and needs. I'll go with Customer engagement.
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