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EMC DEA-7TT2 Valid Braindumps Sheet | Valid DEA-7TT2 Exam Sample

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EMC Associate - Data Science and Big Data Analytics v2 Exam Sample Questions (Q59-Q64):

NEW QUESTION # 59
Before you build an ARMA model, how can you tell if your time series is weakly stationary?
Response:

A. There appears to be no apparent trend component.
B. There appears to be a constant variance around a constant mean.
C. The mean of the series is close to 0.
D. The series is normally distributed.

Answer: B

NEW QUESTION # 60
You need to run a hypothesis test across three normally distributed populations. Which technique should you use?
Response:

A. Z-test
B. Wilcoxon rank sum test
C. Welch,s t-test
D. ANOVA

Answer: D

NEW QUESTION # 61
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. Perform ELT / ETL
B. Run descriptive statistics for several data sets
C. Assess data quality
D. Create data visualizations

Answer: A

NEW QUESTION # 62
Which activity might be performed in the Operationalize phase of the Data Analytics Lifecycle?
Response:

A. Try different variables
B. Try different analytical techniques
C. Run a pilot
D. Transform existing variables

Answer: C

NEW QUESTION # 63
In data visualization, what is used to focus the audience on a key part of a chart?
Response:

A. Emphasis colors
B. Pastel colors
C. Detailed text
D. A data table

Answer: A

NEW QUESTION # 64
......

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Adam Bell Adam Bell

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