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Data Science and Big Data Analytics

Exam Details

  • Exam Code
    :E20-007
  • Exam Name
    :Data Science and Big Data Analytics
  • Certification
    :EMC Certifications
  • Vendor
    :EMC
  • Total Questions
    :198 Q&As
  • Last Updated
    :Mar 30, 2025

EMC EMC Certifications E20-007 Questions & Answers

  • Question 181:

    You have been assigned to run a logistic regression model for each of 100 countries, and all the data is currently stored in a PostgreSQL database. Which tool/library would you use to produce these models with the least effort?

    A. MADlib

    B. Mahout

    C. RStudio

    D. HBase

  • Question 182:

    You are performing a market basket analysis using the Apriori algorithm. Which measure is a ratio describing the how many more times two items are present together than would be expected if those two items are statistically independent?

    A. Lift

    B. Leverage

    C. Support

    D. Confidence

  • Question 183:

    Which key role for a successful analytic project can consult and advise the project team on the value of end results and how these will be used on a day-to-day basis?

    A. Business User

    B. Project Manager

    C. Data Scientist

    D. Business Intelligence Analyst

  • Question 184:

    To ensure a successful analytic project, which key role can provide business domain expertise with a deep understanding of the data and key performance indicators?

    A. Business Intelligence Analyst

    B. Project Manager

    C. Project Sponsor

    D. Business User

  • Question 185:

    If your intention is to show trends over time, which chart type is the most appropriate way to depict the data?

    A. Line chart

    B. Bar chart

    C. Stacked bar chart

    D. Histogram

  • Question 186:

    Which process in text analysis can be used to reduce dimensionality?

    A. Stemming

    B. Parsing

    C. Digitizing

    D. Sorting

  • Question 187:

    Refer to the exhibit.

    You have created a density plot of purchase amounts from a retail website as shown. What should you do next?

    A. Recreate the plot using the barplot() function

    B. Use the rug() function to add elements to the plot

    C. Recreate the density plot using a log normal distribution of the purchase amount data

    D. Reduce the sample size of the purchase amount data used to create the plot

  • Question 188:

    What is an appropriate data visualization to use in a presentation to a project sponsor?

    A. Bar Chart

    B. Pie Chart

    C. Box and Whisker Plot

    D. Density Plot

  • Question 189:

    Which word or phrase completes the statement? Business Intelligence is to monitoring trends as Data Science is to ________ trends.

    A. Predicting

    B. Discarding

    C. Driving

    D. Optimizing

  • Question 190:

    Which word or phrase completes the statement; "A data scientist would consider a RDBMS is to a table as R is to a ___________."?

    A. Data frame

    B. List

    C. Matrix

    D. Array

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