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D-DS-FN-23 Exam Dumps : Dell Data Science Foundations

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Dell Data Science Foundations Questions and Answers

Question 1

What action occurs during feature selection in the model building phase of the data analytics lifecycle?

Options:

A.

Create new combinations of attributes

B.

Overfit the model to improve prediction accuracy

C.

Identify the most useful input variables

D.

Select a superset of variables to shorten training times

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Question 2

On which type of data should you run K-means clustering?

Options:

A.

Ordinal

B.

Numeric

C.

Text

D.

Nominal

Question 3

Refer to the exhibit.

What is the approximate R-squared value for a linear regression model fitted to the data associated with this scatterplot?

Options:

A.

4

B.

0.96

C.

0.25

D.

16