VALID DEA-7TT2 TEST REVIEW - DEA-7TT2 EXAM CRAM

Valid DEA-7TT2 Test Review - DEA-7TT2 Exam Cram

Valid DEA-7TT2 Test Review - DEA-7TT2 Exam Cram

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Tags: Valid DEA-7TT2 Test Review, DEA-7TT2 Exam Cram, Exam DEA-7TT2 Book, Actual DEA-7TT2 Test, Latest DEA-7TT2 Test Voucher

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DEA-7TT2 Exam Cram | Exam DEA-7TT2 Book

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EMC Associate - Data Science and Big Data Analytics v2 Exam Sample Questions (Q24-Q29):

NEW QUESTION # 24
Which word or phrase completes the statement; "Discovering relationships is to Association Rules as generating forecasts is to __________."?
Response:

  • A. Time Series Analysis
  • B. Text Analysis
  • C. Classification
  • D. Clustering

Answer: A


NEW QUESTION # 25
In R, functions like plot() and hist() are known as what?
Response:

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

Answer: A


NEW QUESTION # 26
In linear regression, what indicates that an estimated coefficient is significantly different than zero?
Response:

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

Answer: A


NEW QUESTION # 27
How are window functions different from regular aggregate functions?
Response:

  • A. Rows are grouped into an output row and the window function can only access the current row.
  • B. Rows retain their separate identities and the window function can only access the current row.
  • C. Rows are grouped into an output row and the window function can access more than the current row.
  • D. Rows retain their separate identities and the window function can access more than the current row.

Answer: D


NEW QUESTION # 28
A study was run to identify general dietary patterns among the residents of a small town. Twelve thousand people were surveyed and the data was subject to K-means clustering. In one of the iterations, there were six clusters formed with 38, 1560, 1799, 2560, 2893, and 3150 respondents.
What should be the next step in identifying optimal clusters?
Response:

  • A. Multiply each variable by its standard deviation
  • B. Remove 38 respondents because the 5 clusters seem to be well distributed
  • C. Increase the number of clusters to see if the last cluster gets combined
  • D. Decrease the number of clusters to see if the last cluster gets combined

Answer: D


NEW QUESTION # 29
......

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