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CompTIA DA0-001 Exam covers a wide range of topics, including data storage and management, data processing and analysis, data visualization, and data security. Candidates are expected to have a thorough understanding of data structures, database design, data warehousing, and data mining. They should also be familiar with data analysis tools such as Excel, R, and SQL, as well as visualization tools such as Tableau and Power BI.
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CompTIA Data+ Certification Exam is a vendor-neutral certification that is recognized globally. CompTIA Data+ Certification Exam certification is designed for individuals who want to advance their careers in data management and become a trusted expert in the field. CompTIA Data+ Certification Exam certification exam is ideal for professionals who work in IT, data management, and business intelligence.
NEW QUESTION # 330
Different people manually type a series of handwritten surveys into an online database. Which of the following issues will MOST likely arise with this data? (Choose two.)
Answer: B,C
Explanation:
Data accuracy refers to the extent to which the data is correct, reliable, and free of errors. When different people manually type a series of handwritten surveys into an online database, there is a high chance of human error, such as typos, misinterpretations, omissions, or duplications. These errors can affect the quality and validity of the data and lead to incorrect or misleading analysis and decisions.
Data consistency refers to the extent to which the data is uniform and compatible across different sources, formats, and systems. When different people manually type a series of handwritten surveys into an online database, there is a high chance of inconsistency, such as different spellings, abbreviations, formats, or standards. These inconsistencies can affect the integration and comparison of the data and lead to confusion or conflicts.
Therefore, to ensure data quality, it is important to have clear and consistent rules and procedures for data entry, validation, and verification. It is also advisable to use automated tools or methods to reduce human error and inconsistency.
NEW QUESTION # 331
A data analyst needs to write a SOL query measuring last month's website visits and distribute a summary report to the marketing team. Which of the following is the analyst creating?
Answer: A
NEW QUESTION # 332
An analyst reviews the following table:
Which of the following data types is represented in the values in the RefNo column?
Answer: D
Explanation:
Comprehensive and Detailed In-Depth
The RefNo column contains values that consist solely of digits without any alphabetical characters or special symbols, indicating a numeric data type.
NEW QUESTION # 333
An analyst notices changes in sales ratios when analyzing a quarterly report. Which of the following is the analyst conducting?
Answer: D
Explanation:
When an analyst observes changes in sales ratios over a period, such as in a quarterly report, they are conducting a trend analysis. Trend analysis is a statistical method used to examine and evaluate the movement of data points over time to identify patterns or trends. This type of analysis is particularly useful for forecasting future events based on historical data. It differs from gap analysis, which assesses the difference between actual performance and potential or desired performance; link analysis, which is used to find associations among data; and statistical analysis, which is a broad term for all types of data analysis methods, including trend analysis.
References:
* Investopedia article on Ratio Analysis1.
* SpringerLink chapter on Financial Ratios Analysis2.
* ExamTopics page mentioning sales ratios in the context of analysis3.
* Investopedia definition of Ratio Analysis4.
* LiveWell article on Financial Ratio Analysis5.
NEW QUESTION # 334
Which of the following is the correct data type for text?
Answer: C
Explanation:
Explanation
A string is a data type that represents a sequence of characters, such as text, symbols, numbers, or punctuation marks. Strings are enclosed in quotation marks, such as "Hello", "123", or "!@#". Strings can be manipulated, concatenated, sliced, indexed, formatted, and searched using various methods and functions. A string is different from other data types, such as boolean, integer, or float, which represent logical values (true or false), whole numbers, or decimal numbers respectively. Therefore, the correct answer is B. References: What is a String? | Definition and Examples, Python String Methods
NEW QUESTION # 335
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