Dell E20-007 - Data Science Associate Exam Exam

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Total 198 questions

Assume you are performing an analysis to determine fraud detection on credit card usage.
You will need to ensure higher-risk transactions. These may indicate that fraudulent credit card activity is retained in your data for analysis and not dropped as outliers during pre- processing.
What is the approach for loading data into the analytical sandbox for this analysis?

  • A. ELT
  • B. ETL
  • C. EDW
  • D. OLTP


Answer : A

Which characteristic applies mainly to Data Science as opposed to Business Intelligence?

  • A. Advanced analytical methods
  • B. Robust reporting
  • C. Focus on structured data
  • D. Data dashboards


Answer : A

In linear regression, what indicates that an estimated coefficient is significantly different than zero?

  • A. A small p-value
  • B. R-squared near 1
  • C. R-squared near 0
  • D. The estimated coefficient is greater than 3


Answer : A

What is required in a presentation for project sponsors?

  • A. The "Big Picture" takeaways for executive level stakeholders
  • B. Data warehouse design changes
  • C. Line by line review of the developed code
  • D. Detailed statistical basis for the modeling approach used in the project


Answer : A

In R, functions like plot() and hist() are known as what?

  • A. generic functions
  • B. virtual methods
  • C. virtual functions
  • D. generic methods


Answer : B

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Total 198 questions