Dell D-DS-FN-23 Exam Questions

Question 6 of 59

A decision tree is being built. An internal node is being evaluated for partitioning on variables A and B. The entropy of the internal node is 0.8. The entropy for each of the variables is as follows:

Variable A: 0.5 -

Variable B: 0.4 -
Which variable will be used to partition the data and what is the information gain?

Variable B; information gain is 0.1

Variable B; information gain is 0.4

Variable A; information gain is 0.1

Variable A; information gain is 0.5

Correct Answer: B

Question 7 of 59

In association rules, given items X and Y, what does lift measure?

Percentage of transactions that contain an itemset with X

Percentage of transactions with X that also contain Y

Difference in the probability of X and Y appearing together compared with expectations as if they were statistically independent

How many times more often X and Y occur together than expected if they were statistically independent, expressed as a ratio

Correct Answer: D

Question 8 of 59

What are categorized as cluster and workflow management tools for Hadoop?

Flume, Sqoop, and Storm

Drill, Hive, and HBase

Spark, Tez, and Cassandra

Ambari, Oozie, and Zookeeper

Correct Answer: D

Question 9 of 59

Consider the following text:
“Stop!” he shouted. “Don’t go there!”
What set of words result from using a tokenizer for punctuation on the text?

Stop, he, shouted, don, t, go, there

Stop, he shouted, don, t go there

Stop, he shouted, dont go there

Stop, he, shouted, dont, go, there

Correct Answer: D

Question 10 of 59

Which phase of the data analytic lifecycle includes conducting project sponsor interviews and drafting a problem statement?

Operationalize

Model planning

Model building

Discovery

Correct Answer: D