EMC D-DS-FN-23 Test Question - D-DS-FN-23 Study Guide

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EMC D-DS-FN-23 Exam Syllabus Topics:

Topic	Details
Topic 1	Advanced Analytics - Theory, Application, and Interpretation of Results for Eight Methods: This section of the exam measures the skills of an Entry-Level Data Analyst and covers foundational knowledge in various advanced analytics methods. Topics include the theory, application, and interpretation of K-means clustering, association rules, linear and logistic regression, naïve Bayesian classifiers, decision trees, time series analysis, and text analytics.
Topic 2	Initial Analysis of the Data: This section of the exam measures the skills of a Data Science Enthusiast and focuses on the first steps in analyzing data. It explains how basic R commands are used for exploration, discusses important statistical measures and visualizations, and describes hypothesis testing techniques for evaluating models.
Topic 3	Data Analytics Lifecycle: This section of the exam measures the skills of an Entry-Level Data Analyst and explains the purpose and phases of the data analytics lifecycle. It includes understanding key activities and roles involved in the discovery, data preparation, model planning, and model building phases to successfully manage analytics projects.
Topic 4	Big Data, Analytics, and the Data Scientist Role: This section of the exam measures the skills of a Data Science Enthusiast and covers the basic concepts of Big Data, including its defining characteristics and the business drivers behind its rise. It also introduces the role of the Data Scientist, highlighting the critical skills needed in the data science field.

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Free PDF EMC - D-DS-FN-23 - Unparalleled Dell Data Science Foundations Test Question

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EMC Dell Data Science Foundations Sample Questions (Q80-Q85):

NEW QUESTION # 80
Which activity might be performed in the Operationalize phase of the Data Analytics Lifecycle?

A. Transform existing variables
B. Try different analytical techniques
C. Try different variables
D. Run a pilot

Answer: D

NEW QUESTION # 81
Refer to the exhibit.

You have run a linear regression model against your data, and have plotted true outcome versus predicted outcome. The R-squared of your model is 0.75.
What is your assessment of the model?

A. The extreme-valued outliers may negatively affect the model's performance. Remove them to see if the R-squared improves over typical data.
B. The observations seem to come from two different populations, but this model fits them both equally well.
C. The R-squared is good. The model should perform well.
D. The R-squared may be biased upwards by the extreme-valued outcomes. Remove them and refit to get a better idea of the model's quality over typical data.

Answer: D

NEW QUESTION # 82
MapReduce is designed to process data in which way?

A. Many small files processed in parallel across multiple machines
B. A few large files split into blocks processed serially on one machine
C. A few large files split into blocks processed in parallel across multiple machines
D. Many small files processed serially on one machine

Answer: C

Explanation:
MapReduce is designed to process a few large files that are split into blocks and then processed in parallel across multiple machines. This approach allows for efficient distributed processing of large datasets.

NEW QUESTION # 83
Which Hadoop service responds to requests for compute and memory resources?

A. Scheduler
B. Application Manager
C. Application Master
D. DataNode

Answer: A

Explanation:
The Scheduler in Hadoop is responsible for allocating compute and memory resources across various applications running on the cluster. It decides how resources are distributed based on policies and availability.

NEW QUESTION # 84
What provides the means for matching and manipulating text strings in SQL?

A. Regular expressions
B. TF-IDF
C. Association rules
D. PACF

Answer: A

NEW QUESTION # 85
......

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EMC D-DS-FN-23 Test Question - D-DS-FN-23 Study Guide

EMC D-DS-FN-23 Exam Syllabus Topics:

Free PDF EMC - D-DS-FN-23 - Unparalleled Dell Data Science Foundations Test Question

EMC Dell Data Science Foundations Sample Questions (Q80-Q85):

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