DA0-002 PDF Question | DA0-002 Latest Test Vce

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CompTIA DA0-002 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Visualization: This section of the exam measures skills of a Data Visualisation Specialist and focuses on turning raw data into clear, visual insights. It teaches how to match visual formats like bar charts, heat maps, and line graphs to specific audiences and needs. Candidates must understand how to create dashboards and reports using proper design elements such as labels, layout, branding, and colour schemes. This section also includes best practices for dashboard development and delivery through various platforms and user access levels.
Topic 2
  • 5.0 Data Governance, Quality, and Controls
Topic 3
  • Data Mining: This section of the exam measures skills of a Business Intelligence Analyst and covers how data is collected, cleaned, and prepared for analysis. It explains methods like ETL and ELT for data integration, as well as web scraping, API use, and survey data collection. Candidates are expected to identify issues like missing or duplicated data and apply techniques like filtering, sorting, merging, and normalizing. The section also touches on query optimization strategies to improve data handling efficiency.
Topic 4
  • Data Concepts and Environments: This section of the exam measures the skills of a Junior Data Analyst and focuses on understanding core data concepts such as database types, schema structures, and data formats. It highlights differences between structured and unstructured data, compares file types like CSV, JSON, and XML, and introduces key ideas about data dimensions and slowly changing dimensions. Knowing how data is stored and organized helps professionals better prepare for analysis and reporting tasks.
Topic 5
  • Data Analysis: This section of the exam measures skills of a Reporting Analyst and includes foundational knowledge of statistical methods such as averages, variances, and standard deviation. It covers how to use data to find patterns, track performance, and make predictions. This domain also introduces hypothesis testing, regression, correlation, and different types of analysis like exploratory and trend analysis. Candidates should also be aware of common tools used for analysis, including Excel, SQL, Python, R, and popular BI platforms like Tableau and Power BI.

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CompTIA Data+ Exam Sample Questions (Q180-Q185):

NEW QUESTION # 180
A Chief Executive Officer (CEO) reviews the results of a sales report and notices that the company's performance decreased in the last quarter. The CEO needs additional information to understand the reason. Which of the following is the best analysis method for a data analyst to use?

Answer: C

Explanation:
Diagnostic analysis is used to determine why an event occurred. Since the CEO already knows that sales performance decreased and wants to understand the underlying causes, diagnostic analysis is the appropriate method to identify the factors that contributed to the decline.


NEW QUESTION # 181
A manager wants to use the information in a recurring report on incomplete timesheets for the prior month to guide employee outreach. Which of the following report types is the best for this task?

Answer: A


NEW QUESTION # 182
A data analyst creates a report, and some of the fields are empty. Which of the following conditions should the analyst add to a query to provide a list of all the records with empty fields?

Answer: A

Explanation:
This question falls under theData Analysisdomain, focusing on SQL queries to identify data issues. The task is to find records with empty fields, which in SQL means NULL values.
* WHERE [ColumnName] = NULL (Option A): In SQL, NULL cannot be compared using "="; this syntax is incorrect.
* WHERE [ColumnName] IS NULL (Option B): This is the correct SQL syntax to identify NULL values, which represent empty fields.
* WHERE [ColumnName] IS NOT NULL (Option C): This finds non-empty fields, the opposite of the requirement.
* WHERE [ColumnName] = 'NULL' (Option D): This checks for the string "NULL," not a true NULL value, which is incorrect.
The DA0-002 Data Analysis domain includes "applying the appropriate descriptive statistical methods using SQL queries," such as identifying NULL values with IS NULL.
Reference: CompTIA Data+ DA0-002 Draft Exam Objectives, Domain 3.0 Data Analysis.


NEW QUESTION # 183
A data analyst team needs to segment customers based on customer spending behavior. Given one million rows of data like the information in the following sales order table:

Which of the following techniques should the team use for this task?

Answer: B

Explanation:
Binning groups continuous numerical values such as customer spending into defined ranges, enabling segmentation of customers based on spending behavior.


NEW QUESTION # 184
A sales manager wants a dashboard that shows sales aggregated by region and identifies high- volume sales by salesperson per region. Which of the following communication techniques best displays this information?

Answer: A

Explanation:
Level of detail allows data to be aggregated at different granularities, enabling analysis by region while also identifying high-volume sales at the salesperson level within each region.


NEW QUESTION # 185
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