D-DS-FN-23 Exam Vce Format - D-DS-FN-23 New Dumps Questions

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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	Operationalizing an Analytics Project and Data Visualization Techniques: This section of the exam measures the skills of an Entry-Level Data Analyst and explains best practices for communicating findings and operationalizing analytics projects. It covers effective methods for presenting projects to various audiences and emphasizes the importance of planning and creating impactful data visualizations.
Topic 3	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 4	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.

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D-DS-FN-23 VCE Exam Guide & D-DS-FN-23 Latest Practice Questions & D-DS-FN-23Online Exam Simulator

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EMC Dell Data Science Foundations Sample Questions (Q302-Q307):

NEW QUESTION # 302
You have created a Logistic Regression model to predict customer churn for your company. The company's Marketing department wants to use your model to identify at-risk customers and offer incentives to keep them from leaving.

Using two different thresholds for the model provides the two confusion matrices shown in the graphic.
Marketing understands the relative costs of missing at-risk customers versus offering incentives to customers who are not at risk. Therefore, you need their advice on how to set the appropriate threshold on the churn model.
You are meeting with the Marketing team. In the meeting, you plan to state: "Raising the threshold from 0.5 to 0.75 reduces the number of unnecessary incentives that can be offered, at the cost of missing more of the customers who churned." What is the most appropriate visual to reinforce this statement?

Answer: D

NEW QUESTION # 303
What is the primary bottleneck in text classification?

A. The fact that text corpora are dynamic.
B. The availablilty of tagged training data.
C. The ability to parse unstructured text data.
D. The high dimensionality of text data.

Answer: B

NEW QUESTION # 304
What describes the use of UNION clause in a SQL statement?

A. Operates on both tables and queries and potentially increases both the number of rows and columns
B. Operates on tables and potentially decreases the number of columns
C. Operates on queries and potentially increases the number of rows
D. Operates on queries and potentially decreases the number of rows

Answer: C

NEW QUESTION # 305
Refer to the exhibit.

In the exhibit, a correlogram is provided based on an autocorrelation analysis of a sample dataset.
What can you conclude from only this exhibit?

A. Lag 7 has a significant negative autocorrelation
B. There is significant autocorrelation through lag 3
C. There is no structure left to model in the data
D. Differencing is required before proceeding with any analysis

Answer: B

NEW QUESTION # 306
Adata scientist is investigating a new database column that needs to be integrated into their model. The column contains 10,000 labels with 300 unique values.
Which data structure should be used when working in R?

A. Data frame
B. Array
C. List
D. Factor

Answer: D

NEW QUESTION # 307
......

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D-DS-FN-23 EXAM VCE FORMAT - D-DS-FN-23 NEW DUMPS QUESTIONS

D-DS-FN-23 Exam Vce Format - D-DS-FN-23 New Dumps Questions