Data Science and Big Data Analytics

Here you have the best Dell E20-007 practice exam questions

  • You have 162 total questions to study from
  • Each page has 5 questions, making a total of 33 pages
  • You can navigate through the pages using the buttons at the bottom
  • This questions were last updated on October 8, 2025
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Question 1 of 162
You are using MADlib for Linear Regression analysis. Which value does the statement return?
SELECT (linregr(depvar, indepvar)).r2 FROM zeta1;
    Correct Answer: A

Question 2 of 162
In which lifecycle stage are test and training data sets created?
    Correct Answer: A

Question 3 of 162
When creating a presentation for a technical audience, what is the main objective?
    Correct Answer: B

Question 4 of 162
Your company has 3 different sales teams. Each team's sales manager has developed incentive offers to increase the size of each sales transaction. Any sales manager whose incentive program can be shown to increase the size of the average sales transaction will receive a bonus.
Data are available for the number and average sale amount for transactions offering one of the incentives as well as transactions offering no incentive.
The VP of Sales has asked you to determine analytically if any of the incentive programs has resulted in a demonstrable increase in the average sale amount.
Which analytical technique would be appropriate in this situation?
    Correct Answer: A

Question 5 of 162
In data visualization, what is used to focus the audience on a key part of a chart?
    Correct Answer: A