Test Information:
Total Questions: 66
Test Number: E20-065
Vendor Name: EMC
Cert Name: EMCDS
Test Name: Advanced Analytics Specialist Exam for Data Scientists
Official Site: http://www.certsgrade.com
Version: 8.0
Question: 1
In multinomial logistic
regression, what is used to calculate the probability of outcome occurring?
A. Logistic function applied
to a linear combination of the input and outcome variables
B. Linear regression applied
to a combination of input variables
C. Linear regression applied
to a combination of input and outcome variables
D. Logistic function applied
to a linear combination of the input variables
Answer: B
Question: 2
What is a characteristic of
spark?
A. Unable to run map ->
reduce execution plans
B. Supports applications
written in Python, Java, and Scala
C. Less efficient processing
small files than Hadoop MapReduce
D. Supports workflows that can
return to previous work steps
Answer: B
Question: 3
In a connected, undirected
graph of 5 nodes with 10 edges, how many more edges need to be added to make
the clustering coefficient of every node equal 1?
A. 0
B. 5
C. 10
D. 15
Answer: A
Question: 4
Which metric would be most
helpful in identifying a node that may cause network disruption if the node
were removed?
A. Degree
B. Closeness
C. Betweenness
D. PageRank
Answer: A
Question: 5
The naive Bayer classifier is
trained over 1600 movie reviews and then tested over 400 reviews.
Here is the resulting
confusion matrix:
190 (TP) 10(FN)
80 (FP) 120(TN)
What are the precision,
recall, and the F1-score values?
A. Precision0.95; Recall:
0704; F1-score: 0.809
B. Precision 0.613, Recall:
0.95, F1-score: 0.745
C. Precision 0.704, Recall:
0.95; F1-score: 0.809
D. Precision 0.95; Recall:
0.613; F1-score: 0.745
Answer: C
Question: 6
What is a property of a good
color model for ordinal data?
A. Uses a rainbow-like color
map for distinction of categories
B. Uses a rainbow-like color
map for ease of display and printing
C. Uses perceptually ordinal
colors with just-noticeable increments
D. Uses perceptually ordinal
colors with linear, perceptual increments
Answer: D
Test Information:
Total Questions: 66
Test Number: E20-065
Vendor Name: EMC
Cert Name: EMCDS
Test Name: Advanced Analytics Specialist Exam for Data Scientists
Official Site: http://www.certsgrade.com
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