Free Download EMC New DEA-7TT2 Study Notes With Interarctive Test Engine & High-quality Reliable DEA-7TT2 Test Experience

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How long does it take to pass the Dell DEA-7TT2 Certification Exam?

According to the passing Score, duration & question for the Dell DEA-7TT2 Certification Exam is given below

Duration: 90 minutes
Number of questions: 60
Languages: English
Passing scores: 71%

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EMC Associate - Data Science and Big Data Analytics v2 Exam Sample Questions (Q213-Q218):

NEW QUESTION # 213
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 =262/288 Recall = 262/277
B. Precision = 262/277 Recall = 262/288
C. Precision = 277/262 Recall = 288/262
D. Precision = 288/262 Recall = 277/262

Answer: B

NEW QUESTION # 214
What is a consideration when building decision trees?
Response:

A. Short decision trees are likely subject to overfit
B. Tree structure is sensitive to small changes in the training data
C. Cannot handle variables that affect the outcome in a discontinuous way
D. Correlated variables can cause double-counting

Answer: B

NEW QUESTION # 215
What is a key consideration when preparing a presentation intended for sponsors?
Response:

A. Describe how current processes may be affected
B. Provide details on model planning and building
C. Emphasize the business benefits of implementing the model
D. Describe how to implement the model

Answer: C

NEW QUESTION # 216
Refer to the exhibit.

In the exhibit, a correlogram is provided based on an autocorrelation analysis of a sample dataset. What can you conclude from only this exhibit?
Response:

A. Lag 7 has a significant negative autocorrelation
B. There is no structure left to model in the data
C. Differencing is required before proceeding with any analysis
D. There is significant autocorrelation through lag 3

Answer: D

NEW QUESTION # 217
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. Create data visualizations
D. Perform ELT / ETL

Answer: D

NEW QUESTION # 218
......

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Free Download EMC New DEA-7TT2 Study Notes With Interarctive Test Engine & High-quality Reliable DEA-7TT2 Test Experience

How long does it take to pass the Dell DEA-7TT2 Certification Exam?

Start EMC DEA-7TT2 Exam Preparation Today And Get Success

EMC Associate - Data Science and Big Data Analytics v2 Exam Sample Questions (Q213-Q218):

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