Introduction to Data Science Process Quiz
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Questions and Answers

What is the key characteristic of big data that requires a scalable architecture?

  • Velocity
  • Veracity
  • Volume (correct)
  • Variety
  • Which approach to scaling is at the heart of big data and data science?

  • Increasing memory
  • Vertical scaling
  • Horizontal scaling (correct)
  • Upgrading CPUs
  • Which level of the data hierarchy represents a collection of data elements?

  • Data element
  • Data characteristic
  • Data record (correct)
  • Dataset
  • What is the data type of the accesscount field in the example data?

    <p>Integer</p> Signup and view all the answers

    What is the value of the macaddress field for the last row in the example data?

    <p>B4:07:F9:B9:F8:61</p> Signup and view all the answers

    What is the value of the firstaccess field for the record with visitorid 1893826?

    <p>24:05.1</p> Signup and view all the answers

    Which of the following is NOT a characteristic of big data?

    <p>Variability</p> Signup and view all the answers

    Which of the following data sources is NOT mentioned in the text as an example of big data?

    <p>Satellite imagery</p> Signup and view all the answers

    What is the primary purpose of the data manipulation step in the data science process?

    <p>To clean and prepare the raw data</p> Signup and view all the answers

    Which of the following is the most accurate description of the Velocity characteristic of big data?

    <p>The rate of data growth and real-time processing requirements</p> Signup and view all the answers

    Which of the following is the LEAST likely to be a challenge associated with big data?

    <p>Difficulty in finding skilled data scientists</p> Signup and view all the answers

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