E20-007 Exam - Free Dell Questions and Answers

Question #11 (Topic: )

Refer to the exhibit.
[EMC-E20-007-7.0/EMC-E20-007-6_2.png]
You are using k-means clustering to discover groupings within a data set. You plot within-
sum-of-squares (wss) of multiple cluster sizes. Based on the exhibit, how many clusters
should you use in your analysis?

A. 4 B. 2 C. 8 D. 10

Answer: A

Question #12 (Topic: )

Which activity might be performed in the Operationalize phase of the Data Analytics
Lifecycle?

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

Answer: A

Question #13 (Topic: )

In which lifecycle stage are test and training data sets created?

A. Model building B. Model planning C. Discovery D. Data preparation

Answer: A

Question #14 (Topic: )

A data scientist is asked to implement an article recommendation feature for an on-line
magazine. The magazine does not want to use client tracking technologies such as cookies
or reading history. Therefore, only the style and subject matter of the current article is
available for making recommendations. All of the magazine's articles are stored in a
database in a format suitable for analytics.
Which method should the data scientist try first?

A. K Means Clustering B. Naive Bayesian C. Logistic Regression D. Association Rules

Answer: A

Question #15 (Topic: )

Which data type value is used for the observed response variable in a logistic regression
model?

A. Any positive real number B. Any integer C. A binary value D. Any real number

Answer: C

Dell E20-007 - Data Science Associate Exam Exam