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[General] Reliable D-DS-FN-23 Test Objectives | D-DS-FN-23 Detail Explanation

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【General】 Reliable D-DS-FN-23 Test Objectives | D-DS-FN-23 Detail Explanation

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EMC D-DS-FN-23 Exam Syllabus Topics:
TopicDetails
Topic 1
  • 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 2
  • 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 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
  • Advanced Analytics for Big Data - Technology and Tools: This section of the exam measures the skills of a Data Science Enthusiast and addresses the technological challenges associated with Big Data. It introduces tools and technologies such as MapReduce, Hadoop, the Hadoop ecosystem, in-database analytics, SQL essentials, and advanced SQL techniques like window functions and MADlib.

EMC D-DS-FN-23 Detail Explanation - D-DS-FN-23 Trustworthy DumpsHave similar features to the desktop-based exam simulator contains actual EMC D-DS-FN-23 Practice Test that will help you grasp every topic Compatible with every operating system such as Mac, Linus, iOS, Windows, and Android Works properly on Google chrome, Internet explorer, Microsoft Edge, Opera, etc. Does not require any special plugins to operate creates an exam atmosphere making candidates more confident. Keep track of your progress with self-analysis Points out mistakes at the end of every attempt.
EMC Dell Data Science Foundations Sample Questions (Q95-Q100):NEW QUESTION # 95
In a Logistic Regression, the coefficient for "age" equals -3.
What is the correct interpretation of the Logistic Regression coefficient, holding all other variables constant?
  • A. When age decreases by 3 units, the odds of response are multiplied by e(-3) or 0.05
  • B. For every 1 unit increase in age, the dependent variable is multiplied by -3
  • C. For every 1 unit increase in age, the dependent variable is reduced by 3 units
  • D. When age increases by 1 unit, the odds of response are multiplied by e(-3) or 0.05
Answer: D

NEW QUESTION # 96
A data scientist is asked to implement an article recommendation feature for an online magazine. The magazine does not want to use client tracking technologies such as cookies or reading history.
Therefore, only the style and subject matter of the current article is available for making recommendations.
All of the magazine's articles are stored in a database in a format suitable for analytics.
Which method should the data scientist try first?
  • A. Logistic Regression
  • B. K Means Clustering
  • C. Naive Bayesian
  • D. Association Rules
Answer: B

NEW QUESTION # 97
Consider a scale that has five (5) values that range from "not important" to "very important".
Which data classification best describes this data?
  • A. Ratio
  • B. Ordinal
  • C. Nominal
  • D. Real
Answer: B

NEW QUESTION # 98
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?
  • A.
  • B.
  • C.
  • D.
Answer: C

NEW QUESTION # 99
You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions.
You have tested all the theoretical models in the previous model planning stage, and all tests have yielded statistically insignificant results.
What is your next step?
  • A. Move forward on the model with the highest significance scores relative to the others.
  • B. Run all the models again against a larger sample, leveraging more historical data.
  • C. Report that the results are insignificant, and reevaluate the original business question.
  • D. Modify samples used by the models and iterate until a significant result occurs.
Answer: C

NEW QUESTION # 100
......
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