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EMC Dell Data Science Foundations Sample Questions (Q138-Q143):

NEW QUESTION # 138
Which R data structure allows elements to have different data types?

A. Vector
B. Array
C. Matrix
D. List

Answer: D

NEW QUESTION # 139
Which visualization technique should be avoided?

A. Achieving a high data-ink ratio
B. Using tables of numbers to present all of the data visually
C. Using a small number of contrasting colors to draw distinctions
D. Using visuals to illustrate key points

Answer: B

Explanation:
Using tables of numbers to present all of the data visually should be avoided, as it can overwhelm the audience and make it harder to interpret key insights. Instead, visualizations should simplify data and focus on illustrating trends or patterns effectively.

NEW QUESTION # 140
What does the Receiver Operating Characteristic (ROC) curve show?

A. Relationship between true positive rate and true negative rate
B. Relationship between p-value and true negative rate
C. Relationship between true positive rate and false positive rate
D. Relationship between p-value and true positive rate

Answer: C

NEW QUESTION # 141
What tasks need to be completed when designing an analytic sandbox?

A. Estimate the size of the dataset and plan for 5-10 times the size
B. Define the hardware and Hadoop network requirements
C. Discuss with business experts the best ways to join different datasets
D. Establish the database tables for extract, translate, and load

Answer: A

NEW QUESTION # 142
Which ROC curve represents a perfect model fit?
A)

B)

C)

D)

A. Exhibit B
B. Exhibit A
C. Exhibit D
D. Exhibit C

Answer: B

NEW QUESTION # 143
......

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Hot D-DS-FN-23 Exam Dumps Pdf Free PDF | Professional D-DS-FN-23 Practice Test: Dell Data Science Foundations

D-DS-FN-23 Practice Test & D-DS-FN-23 Free Sample Questions

EMC Dell Data Science Foundations Sample Questions (Q138-Q143):

D-DS-FN-23 Exam Dumps Pdf - Free PDF Quiz EMC Dell Data Science Foundations Realistic Practice Test