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
To ensure a successful analytic project, which key role can consult and advise the project team on the value of end results and how these will be used on a daily basis?
- A . Business User
- B . Project Manager
- C . Data Scientist
- D . Business Intelligence Analyst
Which word or phrase completes the statement? Emphasis color is to standard color as _______.
- A . Main message is to context
- B . Main message is to key findings
- C . Frequent item set is to item
- D . Pie chart is to proportions
A data scientist is preparing a presentation for a meeting with the project’s business sponsors. The distribution of per-sale revenue is an important finding from the analysis. The graphics illustrate four ways to plot the per-sale revenue distribution..”
Which graphic is most appropriate for the sponsor presentation?
- A . Figure A
- B . Figure B
- C . Figure C
- D . Figure D
You have been assigned to do a study of the daily revenue effect of a pricing model of online transactions. You have tested all the theoretical models in the previous model planning stage, and all tests have yielded statistically insignificant results.
What is your next step?
- A . Report that the results are insignificant, and reevaluate the original business question.
- B . Run all the models again against a larger sample, leveraging more historical data.
- C . Move forward on the model with the highest significance scores relative to the others.
- D . Modify samples used by the models and iterate until a significant result occurs.
A disk drive manufacturer has a defect rate of less than 1.0% with 98% confidence. A quality assurance team samples 1000 disk drives and finds 14 defective units.
Which action should the team recommend?
- A . The manufacturing process should be inspected for problems.
- B . A larger sample size should be taken to determine if the plant is functioning properly
- C . A smaller sample size should be taken to determine if the plant is functioning properly
- D . The manufacturing process is functioning properly and no further action is required.
Data visualization is used in the final presentation of an analytics project.
For what else is this technique commonly used?
- A . Assessing data quality
- B . Descriptive statistics
- C . ETLT
- D . Model selection
Refer to the exhibit.
What provides the decision tree for predicting whether or not someone is a good or bad credit risk.
What would be the assigned probability, p(good), of a single male with no known savings?
- A . 0.83
- B . 0
- C . 0.498
- D . 0.6
Which SQL OLAP extension provides all possible grouping combinations?
- A . CUBE
- B . ROLLUP
- C . UNION ALL
- D . CROSS JOIN
Assume you are performing an analysis to determine fraud detection on credit card usage. You will need to ensure higher-risk transactions. These may indicate that fraudulent credit card activity is retained in your data for analysis and not dropped as outliers during pre- processing.
What is the approach for loading data into the analytical sandbox for this analysis?
- A . ELT
- B . ETL
- C . EDW
- D . OLTP
What type of data is represented in the exhibit?
- A . Structured
- B . Unstructured
- C . Quasi-structured
- D . Semi-structured
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