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EMC DEA-7TT2 certification exam covers a wide range of topics that are essential for professionals working in the field of Data Science and Big Data Analytics. Some of the topics covered in this certification include data visualization, data mining, machine learning, and statistical analysis. DEA-7TT2 Exam also covers the latest tools and technologies used in the industry, such as Hadoop, Hive, Pig, and Spark.

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EMC Associate - Data Science and Big Data Analytics v2 Exam Sample Questions (Q83-Q88):

NEW QUESTION # 83
Refer to the exhibit.

You have scored your Naive bayesian classifier model on a hold out test data for cross validation and determined the way the samples scored and tabluated them as shown in the exhibit.
What are the Precision and Recall rate of the model?
Response:

A. Precision = 277/262 Recall = 288/262
B. Precision =262/288 Recall = 262/277
C. Precision = 262/277 Recall = 262/288
D. Precision = 288/262 Recall = 277/262

Answer: C

NEW QUESTION # 84
Refer to the exhibit.

In association rules, for itemsets X and Y, which expression defines leverage?
Response:

A. c
B. b
C. d
D. a

Answer: D

NEW QUESTION # 85
You have just completed the Discovery phase of a project and finished interviewing the main stakeholders. You have identified the necessary data feeds and are now beginning to set up the analytic sandbox. What is the next step?
Response:

A. Assess data quality
B. Run descriptive statistics for several data sets
C. Perform ELT / ETL
D. Create data visualizations

Answer: C

NEW QUESTION # 86
Which word or phrase completes the statement; "A data scientist would consider a RDBMS is to a table as R is to a_____."?
Response:

A. Array
B. Data frame
C. List
D. Matrix

Answer: B

NEW QUESTION # 87
You are attempting to find the Euclidean distance between two centroids:
Centroid A's coordinates: (X = 2, Y = 4)
Centroid B's coordinates (X = 8, Y = 10)
Which formula finds the correct Euclidean distance?
Response:

A. SQRT((2-8)2+(4-10)2) or 8.49
B. SQRT(((2-8) x 2) + ((4-10) x 2)) or 12.17
C. ((2-8) x 2 + (4-10) x 2) or 148
D. ((2-8)2+(4-10)2) or 72

Answer: A

NEW QUESTION # 88
......

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