DELL EMC D-DS-FN-23 Dell Data Science Foundations 2023 Online Training
DELL EMC D-DS-FN-23 Online Training
The questions for D-DS-FN-23 were last updated at Jan 30,2025.
- Exam Code: D-DS-FN-23
- Exam Name: Dell Data Science Foundations 2023
- Certification Provider: DELL EMC
- Latest update: Jan 30,2025
In which lifecycle stage are appropriate analytical techniques determined?
- A . Model planning
- B . Model building
- C . Data preparation
- D . Discovery
What is holdout data?
- A . a subset of the provided data set selected at random and used to validate the model
- B . a subset of the provided data set selected at random and used to initially construct the model
- C . a subset of the provided data set that is removed by the data scientist because it contains data errors
- D . a subset of the provided data set that is removed by the data scientist because it contains outliers
In a t-test with unknown variance, what values are used to calculate the t-statistic?
- A . Sample mean, sample standard deviation, and sample size
- B . Mean, sample standard deviation, and population size
- C . Sample mean, standard deviation, and sample size
- D . Mean, standard deviation, and population size
Which participant in a data analytics project is typically responsible for assessing the validity of the model?
- A . Data scientist
- B . Business user
- C . Project sponsor
- D . Project manager
In a user-defined aggregate function, what is SFUNC?
- A . Window function
- B . State transition function
- C . Final calculation function
- D . Segment-level calculation function
What is required in a presentation for project sponsors?
- A . The "Big Picture" takeaways for executive level stakeholders
- B . Data warehouse design changes
- C . Line by line review of the developed code
- D . Detailed statistical basis for the modeling approach used in the project
Consider the following itemsets:
(hat, scarf, coat)
(hat, scarf, coat, gloves)
(hat, scarf, gloves)
(hat, gloves)
(scarf, coat, gloves)
If the minimum support is 50%, what represents the complete list of frequent 2-itemsets?
- A . (hat, scarf), (hat, gloves)
- B . (hat, scarf), (scarf, coat), (coat, gloves)
- C . (scarf, gloves), (scarf, coat) (hat, gloves)
- D . (hat, scarf), (hat, gloves), (scarf, gloves), (scarf, coat)
Which activity is performed in the Operationalize phase of the data analytics lifecycle?
- A . Try different variables
- B . Try different analytical techniques
- C . Assess the benefits
- D . Transform existing variables
Which ROC curve represents a perfect model fit?
A)
B)
C)
D)
- A . Exhibit A
- B . Exhibit B
- C . Exhibit C
- D . Exhibit D
Which Hadoop service is responsible for requesting resources for, and monitoring the completion of, MapReduce processes?
- A . Application Manager
- B . NameNode
- C . Application Master
- D . DataNode
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