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Data Science Dell Data Science Foundations

Dell Data Science Foundations

Last Update Jun 12, 2025
Total Questions : 59

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Questions 2

What is part of the model output for a linear regression?

Options:

A.  

The assignment of each input datum to a cluster

B.  

Coefficients indicating relative impact of the input variables on the outcome

C.  

The set of all rules X -> Y with minimum support and confidence

D.  

Probability score for each possible class label

Discussion 0
Questions 3

What is the purpose of applying the naïve Bayes conditional independence assumption?

Options:

A.  

To simplify the probability calculations

B.  

To calculate the probability of rare events

C.  

To minimize rounding errors in probability calculations

D.  

To accurately calculate each probability

Discussion 0
Questions 4

You have the data from a popular e-commerce website. You are exploring the time spent (in seconds) on the website by 100,000 customers across 14 different product categories.

What visualization can be used to represent the relationship between time spent and product category?

Options:

A.  

Rug plot

B.  

Scatter plot

C.  

Box and whisker plot

D.  

Hexbin plot

Discussion 0
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Questions 5

What is the primary role of a business intelligence analyst on an analytics project?

Options:

A.  

Extracts business data from source systems

B.  

Ensures business milestones are met

C.  

Provides business-domain expertise

D.  

Defines business goals for the analytics project

Discussion 0

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