New 2024 DA0-001 Dumps for CompTIA Data+ Certified Exam Questions and Answer
Realistic Verified DA0-001 exam dumps Q&As - DA0-001 Free Update
CompTIA DA0-001 certification exam is a computer-based exam that consists of 90 multiple-choice questions. Candidates have 90 minutes to complete the exam, and they must score at least 720 out of 900 to pass the exam. DA0-001 exam is available in English, Japanese, and Portuguese.
NEW QUESTION # 47
A Chief Executive Officer (CEO) is requesting more up-to-date sales data for improved visibility prior to month-end. An analyst must determine the frequency of a sales report that was previously distributed on an as-needed basis. Which of the following would be the most appropriate frequency for this report?
- A. Weekly
- B. Every other month
- C. Quarterly
- D. Monthly
Answer: A
Explanation:
Explanation
The most appropriate frequency for the sales report is weekly, as this will provide the CEO with more up-to-date sales data for improved visibility prior to month-end. A weekly sales report can show the sales performance, trends, and issues of the sales team on a regular basis, and help the CEO to monitor and evaluate the progress and results of the sales activities. A weekly sales report can also help the CEO to identify and address any problems or opportunities that may arise during the month, and to make timely and informed decisions.
NEW QUESTION # 48
Which of the following value is the measure of dispersion "range" between the scores of ten students in a test.
The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.
- A. 0
- B. 1
- C. 2
- D. 3
Answer: C
Explanation:
The correct answer is: 60
Range is the interval between the highest and the lowest score.
Range is a measure of variability or scatteredness of the varieties or observations among themselves and does not give an idea about the spread of the observations around some central value.
Symbolically R = Hs - Ls.
Where R = Range; Hs is the 'Highest score' and Ls is the Lowest Score.
The scores of ten students in a test are: 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.
The highest score is 77 and the lowest score is 17.
So the range is the difference between these two scores Range = 77 - 17 = 60
NEW QUESTION # 49
A data analyst has been asked to organize the table below in the following ways:
By sales from high to low -
By state in alphabetic order -
Which of the following functions will allow the data analyst to organize the table in this manner?
- A. Filtering
- B. Grouping
- C. Sorting
- D. Conditional formatting
Answer: C
Explanation:
Explanation
Sorting is the function that will allow the data analyst to organize the table in the desired manner. Sorting means arranging the data in a specific order, such as ascending or descending, based on one or more criteria.
Sorting can be applied to any column in the table, such as sales or state. References: CompTIA Data+ Certification Exam Objectives, page 11
NEW QUESTION # 50
What test formatting option indicates that a field is required in an entity relationship diagram?
- A. Italicization.
- B. Capitalization.
- C. Underlining.
- D. Boldfacing.
Answer: D
NEW QUESTION # 51
A table in a hospital database has a column for patient height in inches and a column for patient height in centimeters. This is an example of:
- A. dependent data.
- B. duplicate data.
- C. redundant data
- D. invalid data
Answer: C
NEW QUESTION # 52
While reviewing survey data, an analyst notices respondents entered "Jan," "January," and "01" as responses for the month of January. Which of the following steps should be taken to ensure data consistency?
- A. Delete any of the responses that do not have "January" written out.
- B. Sort any of the responses that say "Jan" and update them to "01".
- C. Filter on any of the responses that do not say "January" and update them to "January".
- D. Replace any of the responses that have "01".
Answer: C
Explanation:
Explanation
Filter on any of the responses that do not say "January" and update them to "January". This is because filtering and updating are data cleansing techniques that can be used to ensure data consistency, which means that the data is uniform and follows a standard format. By filtering on any of the responses that do not say "January" and updating them to "January", the analyst can make sure that all the responses for the month of January are written in the same way. The other steps are not appropriate for ensuring data consistency. Here is why:
Deleting any of the responses that do not have "January" written out would result in data loss, which means that some information would be missing from the data set. This could affect the accuracy and reliability of the analysis.
Replacing any of the responses that have "01" would not solve the problem of data inconsistency, because there would still be two different ways of writing the month of January: "Jan" and "January". This could cause confusion and errors in the analysis.
Sorting any of the responses that say "Jan" and updating them to "01" would also not solve the problem of data inconsistency, because there would still be two different ways of writing the month of January: "01" and
"January". This could also cause confusion and errors in the analysis.
NEW QUESTION # 53
Given the diagram below:
Which of the following data schemas shown?
- A. Online transactional processing
- B. Data lake
- C. Relational database
- D. Key-value pairs
Answer: C
NEW QUESTION # 54
Data validation should occur only when data is initially brought into a organization.
- A. False.
- B. True.
Answer: A
NEW QUESTION # 55
Which of the following is an example of a flat file?
- A. JPEG file
- B. CSV file
- C. PDF file
- D. JSON file
Answer: B
Explanation:
Explanation
A CSV file is a type of flat file that stores data as plain text in a table-like structure with rows and columns.
Each row represents a single record, while columns represent fields or attributes of the data. A CSV file uses commas or other delimiters to separate the values in each row. A CSV file can be easily imported or exported by various applications and programs12
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. Aggregation.
- C. Filtering.
- D. Recording
Answer: A
Explanation:
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
An analyst needs to provide a chart to identify the composition between the categories of the survey response data set:
Which of the following charts would be BEST to use?
- A. Pie
- B. Scatter pot
- C. Line
- D. Histogram
- E. Waterfall
Answer: A
Explanation:
Explanation
A pie chart is the best choice to show the composition between the categories of the survey response data set.
A pie chart represents the whole with a circle, divided by slices into parts. Each slice shows the relative size of each category as a percentage of the total. A pie chart is useful when the categories are mutually exclusive and add up to 100%. The table shows the favorite color and the number of responses for each color, which can be easily converted into percentages. A pie chart can show how each color contributes to the total number of responses.
Option A is incorrect because a histogram is used to show how data points are distributed along a numerical scale. The survey response data set is not numerical, but categorical.
Option C is incorrect because a line chart is used to show trends or changes over time. The survey response data set does not have a time dimension.
Option D is incorrect because a scatter plot is used to show the relationship between two numerical variables.
The survey response data set does not have two numerical variables.
Option E is incorrect because a waterfall chart is used to show how an initial value is increased or decreased by a series of intermediate values. The survey response data set does not have an initial value or intermediate values.
References:
How to Choose the Right Chart for Your Data - Infogram
How to Choose the Right Data Visualization | Tutorial by Chartio
Find the Best Visualizations for Your Metrics - The Data School
How to choose the best chart or graph for your data
NEW QUESTION # 58
A data analyst is designing a dashboard that will provide a story of sales and determine which site is providing the highest sales volume per customer The analyst must choose an appropriate chart to include in the dashboard. The following data is available:
Which of the following types of charts should be considered?
- A. Include a pie chart using the site and sales to average sales per customer.
- B. Include a scatter chart using sales volume and average sales per customer.
- C. Include a line chart using the site and average sales per customer.
- D. Include a column chart using the site and sales to average sales per customer.
Answer: D
Explanation:
Explanation
The best type of chart to display the data is D. Include a column chart using the site and sales to average sales per customer.
A column chart is a good choice for comparing categorical data with numerical data, such as the site and sales to average sales per customer. A column chart can show the relative differences between the sites and highlight the site with the highest sales volume per customer. A column chart can also be easily labeled and formatted to make the data clear and understandable.
A line chart is not suitable for this data, because it is used to show trends or changes over time, which is not relevant for the site and sales to average sales per customer data. A line chart would also be confusing and misleading, as it would imply a connection or correlation between the sites that does not exist.
A pie chart is also not a good choice for this data, because it is used to show the proportion of a whole, not the comparison of different categories. A pie chart would also be difficult to read and interpret, as it would require labels or legends to identify the sites and their sales to average sales per customer. A pie chart would also not be able to show the exact values of the sales to average sales per customer, only their relative sizes.
A scatter chart is another inappropriate option for this data, because it is used to show the relationship or correlation between two numerical variables, not between a categorical and a numerical variable. A scatter chart would also be cluttered and unclear, as it would plot each site as a point on a coordinate plane, without any labels or axes. A scatter chart would also not be able to show the differences or rankings between the sites and their sales to average sales per customer.
NEW QUESTION # 59
Which one of the following values will appear first if they are sorted in descending order?
- A. Molly.
- B. Aaron.
- C. Xavier.
- D. Adam.
Answer: C
Explanation:
Explanation
The value that will appear first if they are sorted in descending order is Xavier. Descending order means arranging values from the largest to the smallest, or from the last to the first in alphabetical order. In this case, Xavier is the last name in alphabetical order, so it will appear first when sorted in descending order. The other names will appear in the following order: Molly, Adam, Aaron. Reference: Sorting Data - W3Schools
NEW QUESTION # 60
Which of the following best describes a business analytics tool with interactive visualization and business capabilities and an interface that is simple enough for end users to create their own reports and dashboards?
Python
- A. SAS
- B. Microsoft Power Bl
- C. R
Answer: A
Explanation:
Explanation
The best answer is C. Microsoft Power BI.
Microsoft Power BI is a business analytics and business intelligence service by Microsoft. It aims to provide interactive visualizations and business intelligence capabilities with an interface simple enough for end users to create their own reports and dashboards. Power BI can connect to multiple data sources, clean and transform data, create custom calculations, and visualize data through charts, graphs, and tables. Power BI can be accessed through a web browser, mobile device, or desktop application and integrated with other Microsoft tools like Excel and SharePoint12 Python is not correct, because Python is a general-purpose programming language that can be used for various applications, including data analysis and visualization. However, Python is not a dedicated business analytics tool, and it requires coding or programming skills to create reports and dashboards.
R is not correct, because R is a programming language and software environment for statistical computing and graphics. R can be used for data analysis and visualization, but it is not a specialized business analytics tool, and it requires coding or programming skills to create reports and dashboards.
SAS is not correct, because SAS is a software suite for advanced analytics, business intelligence, data management, and predictive analytics. SAS can provide interactive visualizations and business capabilities, but it does not have an interface that is simple enough for end users to create their own reports and dashboards.
SAS also requires coding or programming skills to use its features.
NEW QUESTION # 61
Given the diagram below:
Which of the following types of sampling is depicted in the image?
- A. Random
- B. Systematic
- C. Stratified
- D. Cluster
Answer: B
Explanation:
Explanation
Systematic sampling is a type of sampling where the sample is selected by following a fixed interval. For example, every 10th person in a list is chosen for the sample. In the image, the sample is selected by choosing every 3rd person in the line, starting from person number 1. This is an example of systematic sampling.
References: Types of Sampling Techniques in Data Analytics You Should Know, Sampling Methods | Types, Techniques & Examples - Scribbr
NEW QUESTION # 62
George is conducting a survey. He intends to distribute the survey via email and wants to optionally follow up with respondents based on their answers.
What quality dimension is most vital to the success of George's survey?
Choose the best answer.
- A. Consistency.
- B. Validity.
- C. Accuracy.
- D. Completeness.
Answer: D
Explanation:
Accuracy is for measuring how well an attribute matches its intended use.
Consistency measures an attribute's value across systems.
Validity ensures an attribute's value falls within an expected range.
While all of these dimensions are important, Completeness is foundational to George's purpose.
NEW QUESTION # 63
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. Delimit
- B. Concatenate
- C. Merge
- D. Append
Answer: A
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 # 64
Which of the following is a control measure for preventing a data breach?
- A. Data encryption
- B. Data attribution
- C. Data transmission
- D. Data retention
Answer: A
NEW QUESTION # 65
A data analyst needs to present the results of an online marketing campaign to the marketing manager. The manager wants to see the most important KPIs and measure the return on marketing investment. Which of the following should the data analyst use to BEST communicate this information to the manager?
- A. A spreadsheet of the raw data from all marketing campaigns and channels
- B. A sell-service dashboard that allows the manager to look at the company's annual budget performance
- C. A real-time monitor that allows the manager to view performance the day the campaign was launched
- D. A summary with statistics, conclusions, and recommendations from the data analyst
Answer: D
NEW QUESTION # 66
A development company is constructing a new unit in its apartment complex. The complex has the following floor plans:
Using the average cost per square foot of the original floor plans, which of the following should be the price of the Rose unit?
- A. $690,000
- B. $640,900
- C. $705,200
- D. $702,500
Answer: C
NEW QUESTION # 67
Which of the ing is the correct ion for a tab-delimited spre file?
- A. az
- B. sv
- C. tap
- D. tar
Answer: B
Explanation:
Explanation
A tab-delimited spreadsheet file is a type of flat text file that uses tabs as delimiters to separate data values in a table. The file extension for a tab-delimited spreadsheet file is usually .tsv, which stands for tab-separated values. Therefore, the correct answer is C. References: [Tab-separated values - Wikipedia], [What is a TSV File? | How to Open, Edit & Convert TSV Files]
NEW QUESTION # 68
......
Use Real DA0-001 Dumps - 100% Free DA0-001 Exam Dumps: https://www.testinsides.top/DA0-001-dumps-review.html
DA0-001 Exam Dumps, Test Engine Practice Test Questions: https://drive.google.com/open?id=1Fhh18Tj3J_WqqjmYwcq6UY_S_1U1CsDD