A data analyst is analyzing the following dataset:
Transaction Date Quantity
Item
Item Price
12/12/12
11
USB Cords 9.99
11/11/11
3
Charging Block
Which of the following methods should the analyst use to determine the total cost for each transaction?
Correct Answer:
D
This question falls under theData Analysisdomain, focusing on calculating new values from existing data. The task is to determine the total cost per transaction, which involves multiplying Quantity by Item Price.
✑ Parsing (Option A): Parsing involves breaking down data (e.g., splitting a string),
not calculating totals.
✑ Scaling (Option B): Scaling adjusts numerical values to a common range (e.g., normalization), not relevant for calculating totals.
✑ Compressing (Option C): Compressing reduces data size, not applicable to calculating costs.
✑ Deriving (Option D): Deriving involves creating new data fields by performing calculations on existing ones (e.g., Total Cost = Quantity ?? Item Price), which fits the task.
The DA0-002 Data Analysis domain includes "applying the appropriate descriptive statistical methods," such as deriving new fields through calculations to analyze data. Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 3.0 Data Analysis.
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Software end users are happy with the quality of product support provided. However, they frequently raise concerns about the long wait time for resolutions. An IT manager wants to improve the current support process. Which of the following should the manager use for this review?
Correct Answer:
C
This question falls under theData Analysisdomain, focusing on methods to gather data for process improvement. The IT manager needs to review user concerns about wait times, which requires collecting feedback.
✑ Infographic (Option A): An infographic visualizes data but isn??t a method for
gathering feedback.
✑ KPI (Option B): KPIs (e.g., average resolution time) measure performance but don??t directly gather user feedback.
✑ Survey (Option C): A survey collects detailed feedback from users about their
experiences, such as wait times, making it the best method for this review.
✑ UAT (Option D): User Acceptance Testing validates software functionality, not support processes.
The DA0-002 Data Analysis domain includes "applying the appropriate descriptive statistical methods," and surveys are a standard method for collecting user feedback to analyze and improve processes.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 3.0 Data Analysis.
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A data analyst is generating a custom report for a Chief Executive Officer's executive meeting. Later, the analyst learns that other custom reports will be required for future executive meetings. Which of the following delivery methods should the analyst use?
Correct Answer:
C
This question falls under theVisualization and Reportingdomain of DA0-002, which involves selecting appropriate delivery methods for reports. The scenario describes a need for custom reports for future executive meetings, implying a scheduled, repeated delivery.
✑ Ad hoc (Option A): Ad hoc reports are generated on-demand for one-time use, not
suitable for ongoing needs.
✑ Real-time (Option B): Real-time delivery provides live data updates, which isn??t necessary for scheduled executive meetings.
✑ Recurring (Option C): Recurring delivery involves scheduling reports to be generated and delivered at regular intervals (e.g., weekly or monthly), which fits the need for future executive meetings.
✑ Self-service (Option D): Self-service allows users to generate reports themselves, but the scenario implies the analyst will create the reports.
The DA0-002 Visualization and Reporting domain includes understanding "the appropriate visualization in the form of a report" with delivery methods , and recurring delivery aligns with scheduled reporting needs.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 4.0 Visualization and Reporting
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A data analyst deployed a report for public access. A user states that the report is not showing the latest information, even though the user updated the source an hour ago. Which of the following should the data analyst check first?
Correct Answer:
C
This question pertains to theData Governancedomain, focusing on troubleshooting data freshness issues in reports. The report isn??t showing the latest data despite a recent source update, indicating a potential refresh or connectivity issue.
✑ Event log (Option A): Event logs might provide insight into errors, but they??re not
the first step for checking data freshness.
✑ User privileges (Option B): Privileges might affect access, but the user can see the report, so this isn??t the issue.
✑ Database connection (Option C): If the database connection failed or isn??t refreshing properly, the report won??t reflect the latest data, making this the first thing to check.
✑ Report corruption (Option D): Corruption might cause errors, but it??s less likely than a connectivity issue for this scenario.
The DA0-002 Data Governance domain includes "data quality control concepts," such as ensuring data freshness by verifying database connections.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 5.0 Data Governance.
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Which of the following best describes the reason an analyst would reference a data dictionary versus a source's metadata?
Correct Answer:
B
This question is part of theData Concepts and Environmentsdomain, focusing on the purpose of data documentation tools like data dictionaries and metadata. The question compares their uses.
✑ To gather information and resources about the data (Option A): This is too vague
and not specific to a data dictionary??s purpose.
✑ To find the content and specific attributes for a dataset (Option B): A data dictionary provides detailed definitions of data elements (e.g., field names, types, descriptions), which is more specific than metadata, which often includes broader information like creation date or source.
✑ To find a summary of basic information about the dataset (Option C): This better describes metadata, which provides high-level summaries, not detailed attributes.
✑ To gather information about the availability of the data (Option D): Neither a data dictionary nor metadata typically focuses on data availability.
The DA0-002 Data Concepts and Environments domain includes understanding "data schemas and dimensions," and a data dictionary is specifically used to find detailed attributes of a dataset.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 1.0 Data Concepts and Environments.
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