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CompTIA DA0-001 Certification Exam covers a broad range of topics, including data storage, data cleaning, data analysis, data visualization, and data reporting. Candidates will be tested on their understanding of data management best practices, data modeling, data governance, and data security. CompTIA Data+ Certification Exam certification exam is suitable for professionals who are looking to advance their careers in the field of data management or data analysis. It is also an excellent choice for professionals who are looking to transition into a data-related role.

CompTIA Data+ Certification Exam Sample Questions (Q54-Q59):

NEW QUESTION # 54
A customer survey reveals 90% positive feedback. Which of the following statistical methods would be best to utilize to determine the reliability of a data set and predict how a larger sample of customers over the same time period might respond?

A. Calculate the maximum range of the survey responses.
B. Calculate a low standard deviation on survey responses.
C. Remove any data more than 4 standard deviation from the mean.
D. Calculate a high variance on survey responses.

Answer: B

Explanation:
A low standard deviation in survey responses indicates that the data points tend to be close to the mean, suggesting a high level of consistency among the responses. This consistency is crucial for determining the reliability of the data set and predicting future outcomes. If the standard deviation is low, it means that the positive feedback is not only high but also consistent, making it a reliable indicator of customer satisfaction and a good predictor of how a larger sample might respond.

NEW QUESTION # 55
A data analyst needs to create a weekly recurring report on sales performance and distribute it to all sales managers. Which of the following would be the BEST method to automate and ensure successful delivery for this task?

A. Upload the report to the server.
B. Print out a copy.
C. Implement subscription access delivery.
D. Use scheduled report delivery.

Answer: D

Explanation:
Explanation
Scheduled report delivery is a feature that allows a data analyst to automate the generation and distribution of a report at a specified time and frequency. This would be the best method to ensure that the sales managers receive the weekly report on sales performance without manual intervention. Subscription access delivery is a feature that allows users to subscribe to a report and access it on demand, but it does not automate the delivery.
Printing out a copy or uploading the report to the server are manual methods that require more time and effort from the data analyst. Reference: CertMaster Practice for Data+ Exam Prep - CompTIA

NEW QUESTION # 56
You are working with a dataset and need to swap the values in rows with those in columns.
What action do you need to perform?

A. Transposition.
B. Recording
C. Aggregation.
D. Filtering.

Answer: A

Explanation:
Transpose creates a new data file in which the rows and columns in the original data file are transposed so that cases (rows) become variables and variables (columns) become cases. Transpose automatically creates new variable names and displays a list of the new variable names.
Transposing data is useful for data analysis. At times, we have to pull data from various files with different formats for analysis and preparing reports. In such circumstances, we may have to transpose some data from one file to the other. In excel, we can transpose data in multiple ways.

NEW QUESTION # 57
A data analyst for a media company needs to determine the most popular movie genre. Given the table below:

Which of the following must be done to the Genre column before this task can be completed?

A. Concatenate
B. Merge
C. Delimit
D. Append

Answer: C

Explanation:
Explanation
The action that must be done to the Genre column before this task can be completed is delimit. Delimit is a process of separating or splitting a string of text into multiple parts based on a delimiter, which is a character or a sequence of characters that marks the boundary between the parts. For example, a comma (,) or a semicolon (;) can be used as a delimiter. In this case, the Genre column contains multiple genres for each movie, separated by commas. To determine the most popular movie genre, the data analyst needs to delimit the Genre column by commas, so that each genre can be counted and compared separately. The other options are not relevant for this task, as they are related to combining or joining strings or tables, not separating them.
Append is a process of adding or attaching one string or table to the end of another string or table. Merge is a process of combining or joining two or more tables into one table based on a common column or key.
Concatenate is a process of joining or linking two or more strings together into one string. Reference: [How to Split Text in Excel - Exceljet]

NEW QUESTION # 58
Which of the following is an example of a discrete variable?

A. The time to complete a task
B. The height of a horse
C. The number of people in an office
D. The temperature of a hot tub

Answer: C

Explanation:
A discrete variable is a variable that can only take on a finite number of values, such as integers or categories. The number of people in an office is an example of a discrete variable, as it can only be a whole number. The temperature of a hot tub, the height of a horse, and the time to complete a task are examples of continuous variables, as they can take on any value within a range. Reference: CompTIA Data+ (DA0-001) Practice Certification Exams | Udemy

NEW QUESTION # 59
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Jacob Reed Jacob Reed

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