EMC Data Science and Big Data Analytics - E20-007무료 덤프문제 풀어보기
In the MapReduce framework, what is the purpose of the Reduce function?
정답: B
Under which circumstance do you need to implement N-fold cross-validation after creating a regression model?
정답: A
When creating a project sponsor presentation, what is the main objective?
정답: B
In which phase of the analytic lifecycle would you expect to spend most of the project time?
정답: C
Refer to the exhibit.
After analyzing a dataset, you report findings to your team:
1.Variables A and C are significantly and positively impacting the dependent variable.
2.Variable B is significantly and negatively impacting the dependent variable.
3.Variable D is not significantly impacting the dependent variable.
After seeing your findings, the majority of your team agreed that variable B should be positively impacting the dependent variable.
What is a possible reason the coefficient for variable B was negative and not positive?
After analyzing a dataset, you report findings to your team:
1.Variables A and C are significantly and positively impacting the dependent variable.
2.Variable B is significantly and negatively impacting the dependent variable.
3.Variable D is not significantly impacting the dependent variable.
After seeing your findings, the majority of your team agreed that variable B should be positively impacting the dependent variable.
What is a possible reason the coefficient for variable B was negative and not positive?
정답: D
Which type of numeric value does a logistic regression model estimate?
정답: A
Refer to the exhibit.
Click on the calculator icon in the upper left corner. An analyst is searching a corpus of documents for the topic "solid state disk". In the Exhibit, Table A provides the inverse document frequency for each term across the corpus. Table B provides each term's frequency in four documents selected from corpus. Which of the four documents is most relevant to the analyst's search?
Click on the calculator icon in the upper left corner. An analyst is searching a corpus of documents for the topic "solid state disk". In the Exhibit, Table A provides the inverse document frequency for each term across the corpus. Table B provides each term's frequency in four documents selected from corpus. Which of the four documents is most relevant to the analyst's search?
정답: C
In R, functions like plot() and hist() are known as what?
정답: D
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?
정답: B
Which word or phrase completes the statement? Structured data is to OLAP data as quasi-structured data is to____
정답: C
Consider a database with 4 transactions:
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
You decide to run the association rules algorithm where minimum support is 50%. Which rule has a confidence at least 50%?
Transaction 1: {cheese, bread, milk}
Transaction 2: {soda, bread, milk}
Transaction 3: {cheese, bread}
Transaction 4: {cheese, soda, juice}
You decide to run the association rules algorithm where minimum support is 50%. Which rule has a confidence at least 50%?
정답: A
Data visualization is used in the final presentation of an analytics project. For what else is this technique commonly used?
정답: A
What describes the use of UNION clause in a SQL statement?
정답: C