In the data analytics lifecycle, what is the primary purpose of the data preparation phase?

To collect raw data from various sources and store it in a data lake

To build and train predictive models on the prepared data

To communicate findings and insights to business stakeholders

To transform raw data into a clean, structured, and analysis-ready format

A data science team is preparing data for a recommendation engine. The data engineer has built the pipeline, but the data scientist needs to add a new feature that requires joining data from a third-party source. The business analyst is concerned about the cost of the third-party data. What is the BEST way to proceed?

Have the business analyst approve the cost without evaluation

Have the data engineer integrate the third-party data immediately

Have the data scientist evaluate the feature's impact before integrating

Skip the third-party data and use existing data

A retail company is preparing sales data for a demand forecasting model. The data contains seasonal patterns, but the data scientist is unsure whether to include data from the previous year's holiday season. The business analyst notes that the previous year's data may be affected by a one-time promotion. What is the BEST approach?

Adjust the data to remove the promotion effect

Ask the business analyst to decide

Exclude the entire previous year's data

Dell Data Science Foundations

Domain 2Objective 3

Data Preparation - Describe Details of This Phase, Including Activities and Associated Roles DATA-SCIENCE-FOUNDATIONS Practice Questions (Page 4)

Part of the Data Analytics Lifecycle domain, which accounts for 8% of the DATA-SCIENCE-FOUNDATIONS exam.

19questions here

4free pages

3concepts

8%of the exam

Questions 16–19

16foundation · easy
In the data analytics lifecycle, what is the primary purpose of the data preparation phase?
Select an answer first
17expert · hard
A data science team is preparing data for a recommendation engine. The data engineer has built the pipeline, but the data scientist needs to add a new feature that requires joining data from a third-party source. The business analyst is concerned about the cost of the third-party data. What is the BEST way to proceed?
Select an answer first
18expert · hard
A retail company is preparing sales data for a demand forecasting model. The data contains seasonal patterns, but the data scientist is unsure whether to include data from the previous year's holiday season. The business analyst notes that the previous year's data may be affected by a one-time promotion. What is the BEST approach?
Select an answer first
19application · medium
A marketing team wants to analyze customer feedback from surveys and social media. The data scientist has the survey data in a structured format, but the social media data is unstructured text. What is the PRIMARY data preparation activity needed to make both datasets usable together?
Select an answer first

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Data Preparation - Describe Details of This Phase, Including Activities and Associated Roles DATA-SCIENCE-FOUNDATIONS Practice Questions (Page 4)

Questions 16–19

In the data analytics lifecycle, what is the primary purpose of the data preparation phase?

A marketing team wants to analyze customer feedback from surveys and social media. The data scientist has the survey data in a structured format, but the social media data is unstructured text. What is the PRIMARY data preparation activity needed to make both datasets usable together?

Keep studying — Data Analytics Lifecycle