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DELL D-DS-FN-23 Practice Test - Questions Answers

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List of questions

Question 1

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When should you consider using multinomial logistic regression over binary logistic regression?

Dependent variable is continuous or dichotomous

Dependent variable is continuous or dichotomous

Dependent variable is continuous or categorical

Dependent variable is continuous or categorical

Dependent variable has more than two categories

Dependent variable has more than two categories

Dependent variable is continuous only

Dependent variable is continuous only

Suggested answer: C
asked 27/05/2025
Jose Gonzalez
51 questions

Question 2

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In which programming language is Hadoop written?

C++

C++

Scala

Scala

Java

Java

Python

Python

Suggested answer: C
asked 27/05/2025
roberto gaccetta
46 questions

Question 3

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What is a key consideration when preparing a presentation intended for analysts?

Describe how to implement the model

Describe how to implement the model

Provide talking points to promote or evangelize the project

Provide talking points to promote or evangelize the project

Emphasize the business benefits of implementing the model

Emphasize the business benefits of implementing the model

Focus on clean simple-to-understand visuals

Focus on clean simple-to-understand visuals

Suggested answer: D
asked 27/05/2025
Louis Flink
42 questions

Question 4

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A logistic regression model is built to determine the probability of a credit card borrower defaulting on a credit loan. A threshold value of 0.3 is selected. Which statement can be used to predict a borrower will default?

If probability > 0.1, then predict the borrower will default

If probability > 0.1, then predict the borrower will default

If probability < 0.1, then predict the borrower will default

If probability < 0.1, then predict the borrower will default

If probability > 0.3, then predict the borrower will default

If probability > 0.3, then predict the borrower will default

If probability < 0.3, then predict the borrower will default

If probability < 0.3, then predict the borrower will default

Suggested answer: C
asked 27/05/2025
Joe Evanchak
47 questions

Question 5

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What are the two data categories that represent qualitative data?

Ordinal and interval

Ordinal and interval

Nominal and ordinal

Nominal and ordinal

Ratio and interval

Ratio and interval

Nominal and ratio

Nominal and ratio

Suggested answer: B
asked 27/05/2025
Vladimir Kornfeld
52 questions

Question 6

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In hypothesis testing, when does a Type I error occur?

Null hypothesis is rejected when it is actually false

Null hypothesis is rejected when it is actually false

Null hypothesis is rejected when it is actually true

Null hypothesis is rejected when it is actually true

Null hypothesis is accepted when it is actually false

Null hypothesis is accepted when it is actually false

Null hypothesis is accepted when it is actually true

Null hypothesis is accepted when it is actually true

Suggested answer: B
asked 27/05/2025
metodija durtanoski
50 questions

Question 7

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You have been given a task to improve sales force compensation of your organization. As a result of a study, your team decides to classify personnel as follows:

Did not meet quota

Met quota

Exceeded 150% of quota

In which data analytics lifecycle phase should you define these categories for analysis purposes?

Model building

Model building

Communicate results

Communicate results

Operationalize

Operationalize

Model planning

Model planning

Suggested answer: D
asked 27/05/2025
Aur ROULIC
39 questions

Question 8

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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 0.1

Variable B; information gain is 0.4

Variable B; information gain is 0.4

Variable A; information gain is 0.1

Variable A; information gain is 0.1

Variable A; information gain is 0.5

Variable A; information gain is 0.5

Suggested answer: B
asked 27/05/2025
Carlos Almeida Fernandes
40 questions

Question 9

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

Percentage of transactions that contain an itemset with X

Percentage of transactions that contain an itemset with X

Percentage of transactions with Xthat also contain Y

Percentage of transactions with Xthat also contain Y

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

Difference in the probability ofX 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

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

Suggested answer: D
asked 27/05/2025
ABCO TECHNOLOGY
41 questions

Question 10

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

Flume, Sqoop, and Storm

Flume, Sqoop, and Storm

Drill, Hive, and HBase

Drill, Hive, and HBase

Spark, Tez, and Cassandra

Spark, Tez, and Cassandra

Ambari, Oozie, and Zookeeper

Ambari, Oozie, and Zookeeper

Suggested answer: D
asked 27/05/2025
Simon John Mather
50 questions
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