DA0-002 Analyst Practice Questions
The free DA0-002: CompTIA Data+ Exam (2025) questions that deal with analyst, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #2
Which of the following best describes an assessment a data analyst would use to validate that the number of records in a dataset matches the expected results?
Correct answer: B
Explanation
This question pertains to theData Governancedomain, focusing on data quality validation techniques. The task is to validate that the number of records matches expectations, which requires a specific type of assessment. • Source control (Option A): Source control (e.g., Git) manages code versions, not dataset validation. • Unit test (Option B): A unit test checks a specific component of a process, such as verifying that the number of records in a dataset matches the expected count, making it the best fit. • Stress test (Option C): Stress tests evaluate system performance under load, not record counts. • Health check (Option D): A health check monitors system status but isn't specific to validating record counts. The DA0-002 Data Governance domain includes "data quality control concepts," and unit tests are a standard method for validating specific data outcomes like record counts. Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 5.0 Data Governance.
Question #5
A data analyst needs to provide a weekly sales report for the Chief Financial Officer. Which of the following delivery methods is the most appropriate?
Correct answer: D
Explanation
This question pertains to theVisualization and Reportingdomain, focusing on report delivery methods for a specific audience. The Chief Financial Officer (CFO) needs a weekly sales report,suggesting a concise, executive-level summary. • A granular daily report in a dashboard (Option A): Daily granularity is too frequent for a weekly report, and a dashboard might be too interactive for a CFO's needs. • A detailed text document (Option B): A detailed document is too lengthy for a CFO, who typically needs a summary. • A spreadsheet with raw data (Option C): Raw data requires further analysis, which isn't appropriate for an executive-level report. • A high-level email (Option D): A high-level email provides a concise summary of weekly sales, tailored for an executive like a CFO, making it the most appropriate delivery method. The DA0-002 Visualization and Reporting domain emphasizes "translating business requirements to form the appropriate visualization," and a high-level email is best for delivering a weekly summary to a CFO. Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting.
Question #7
An analyst needs to create a collection of dashboards for multiple teams within their organization. Which of the following should the analyst do first before starting the project?
Correct answer: A
Explanation
This question pertains to theVisualization and Reportingdomain, focusing on the initial steps in dashboard creation. The analyst is starting a project for multiple teams, so understanding the audience is critical. • Evaluate the user persona type for the dashboards (Option A): User personas define the needs, roles, and preferences of the audience (e.g., executives vs. analysts), which is the firststep to ensure the dashboards meet user requirements. • Determine the number of team members who need to access the dashboards (Option B): This is important for access control but not the first step in design. • Determine the delivery method of the dashboards (Option C): Delivery method (e.g., self-service) is decided later, after understanding user needs. • Evaluate the KPIs for the dashboards (Option D): KPIs are defined after understanding the user personas and their goals. The DA0-002 Visualization and Reporting domain emphasizes "translating business requirements to form the appropriate visualization," and evaluating user personas is the first step in this process. Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting. ==============
Question #8
A data analyst needs to identify outliers from a given dataset. Which of the following visualizations is the best way to identify outliers?
Correct answer: A
Explanation
This question falls under theVisualization and Reportingdomain, focusing on selecting the appropriate visualization to identify outliers in a dataset. • Box plot (Option A): A box plot displays the distribution of data, including the median, quartiles, and outliers (data points beyond the whiskers), making it the best choice for identifying outliers. • Scatter plot (Option B): A scatter plot shows relationships between two variables, and while outliers may be visible, it's not specifically designed for outlier detection. • Gantt chart (Option C): Gantt charts are for project scheduling, not suitable for outlier identification. • Waterfall chart (Option D): Waterfall charts show cumulative changes (e.g., financial contributions), not designed for outlier detection. The DA0-002 Visualization and Reporting domain emphasizes "translating business requirements to form the appropriate visualization," and a box plot is the standard visualization for identifying outliers. Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting. ==============
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