Question # 1
| 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. Recording | | B. Filtering | | C. Aggregation | | D. Transposition |
D. Transposition
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.
Question # 2
| Which of the following is a difference between a primary key and a unique key?
| | A. A unique key cannot take null values, whereas a primary key can take null values.
| | B. There can be only one primary key in a data set, whereas there can be multiple unique keys.
| | C. A primary key can take a value more than once, whereas a unique key cannot take a value more than once.
| | D. A primary key cannot be a date variable, whereas a unique key can be.
|
B. There can be only one primary key in a data set, whereas there can be multiple unique keys.
Explanation:
The correct answer is B. There can be only one primary key in a data set, whereas there can be multiple unique keys.
A primary key is a column or a set of columns that uniquely identifies each row in a table. A table can have only one primary key, which also enforces the NOT NULL constraint on the column(s) involved. A primary key can also be referenced by a foreign key of another table to establish a relationship between the tables.
A unique key is a column or a set of columns that also uniquely identifies each row in a table, but it is not the primary key. A table can have more than one unique key, which also allows one NULL value for the column(s) involved. A unique key can also be referenced by a foreign key of another table to establish a relationship between the tables.
Some of the differences between a primary key and a unique key are:
A primary key creates a clustered index on the column(s), whereas a unique key creates a non-clustered index on the column(s).
A primary key does not allow any NULL values, whereas a unique key allows one NULL value for the column(s).
A primary key can be a unique key, but a unique key cannot be a primary key.
Question # 3
| Which one of the following programming languages is specifically designed for use in analytics applications?
| | A. Python | | B. R | | C. C++ | | D. Java |
B. R
Question # 4
| 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? | | A. Python | | B. R | | C. Microsoft Power Bl
| | D. SAS |
C. Microsoft Power Bl
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.
Question # 5
| Which of the following is an example of a flat file?
| | A. CSV file
| | B. PDF file
| | C. JSON file
| | D. JPEG file
|
A. CSV file
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 programs.
Question # 6
| Which of the following data manipulation techniques should an analyst use to hide unnecessary data during analysis? | | A. Filtering | | B. Parametrization | | C. Sorting | | D. Indexing |
A. Filtering
Question # 7
| 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 a high variance on survey responses.
| | B. Calculate the maximum range of the survey responses.
| | C. Calculate a low standard deviation on survey responses.
| | D. Remove any data more than 4 standard deviation from the mean.
|
C. Calculate a low standard deviation on survey responses.
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.
CompTIA DA0-001 Exam Dumps
5 out of 5
Pass Your CompTIA Data+ Certification Exam in First Attempt With DA0-001 Exam Dumps. Real CompTIA Data+ Exam Questions As in Actual Exam!
— 363 Questions With Valid Answers
— Updation Date : 15-Apr-2025
— Free DA0-001 Updates for 90 Days
— 98% CompTIA Data+ Certification Exam Passing Rate
PDF Only Price 49.99$
19.99$
Buy PDF
Speciality
Additional Information
Testimonials
Related Exams
- Number 1 CompTIA CompTIA Data+ study material online
- Regular DA0-001 dumps updates for free.
- CompTIA Data+ Certification Practice exam questions with their answers and explaination.
- Our commitment to your success continues through your exam with 24/7 support.
- Free DA0-001 exam dumps updates for 90 days
- 97% more cost effective than traditional training
- CompTIA Data+ Certification Practice test to boost your knowledge
- 100% correct CompTIA Data+ questions answers compiled by senior IT professionals
CompTIA DA0-001 Braindumps
Realbraindumps.com is providing CompTIA Data+ DA0-001 braindumps which are accurate and of high-quality verified by the team of experts. The CompTIA DA0-001 dumps are comprised of CompTIA Data+ Certification questions answers available in printable PDF files and online practice test formats. Our best recommended and an economical package is CompTIA Data+ PDF file + test engine discount package along with 3 months free updates of DA0-001 exam questions. We have compiled CompTIA Data+ exam dumps question answers pdf file for you so that you can easily prepare for your exam. Our CompTIA braindumps will help you in exam. Obtaining valuable professional CompTIA CompTIA Data+ certifications with DA0-001 exam questions answers will always be beneficial to IT professionals by enhancing their knowledge and boosting their career.
Yes, really its not as tougher as before. Websites like Realbraindumps.com are playing a significant role to make this possible in this competitive world to pass exams with help of CompTIA Data+ DA0-001 dumps questions. We are here to encourage your ambition and helping you in all possible ways. Our excellent and incomparable CompTIA CompTIA Data+ Certification exam questions answers study material will help you to get through your certification DA0-001 exam braindumps in the first attempt.
Pass Exam With CompTIA CompTIA Data+ Dumps. We at Realbraindumps are committed to provide you CompTIA Data+ Certification braindumps questions answers online. We recommend you to prepare from our study material and boost your knowledge. You can also get discount on our CompTIA DA0-001 dumps. Just talk with our support representatives and ask for special discount on CompTIA Data+ exam braindumps. We have latest DA0-001 exam dumps having all CompTIA CompTIA Data+ Certification dumps questions written to the highest standards of technical accuracy and can be instantly downloaded and accessed by the candidates when once purchased. Practicing Online CompTIA Data+ DA0-001 braindumps will help you to get wholly prepared and familiar with the real exam condition. Free CompTIA Data+ exam braindumps demos are available for your satisfaction before purchase order.
Send us mail if you want to check CompTIA DA0-001 CompTIA Data+ Certification DEMO before your purchase and our support team will send you in email.
If you don't find your dumps here then you can request what you need and we shall provide it to you.
Bulk Packages
$50
- Get 3 Exams PDF
- Get $33 Discount
- Mention Exam Codes in Payment Description.
Buy 3 Exams PDF
$70
- Get 5 Exams PDF
- Get $65 Discount
- Mention Exam Codes in Payment Description.
Buy 5 Exams PDF
$100
- Get 5 Exams PDF + Test Engine
- Get $105 Discount
- Mention Exam Codes in Payment Description.
Buy 5 Exams PDF + Engine
 Jessica Doe
CompTIA Data+
We are providing CompTIA DA0-001 Braindumps with practice exam question answers. These will help you to prepare your CompTIA Data+ Certification exam. Buy CompTIA Data+ DA0-001 dumps and boost your knowledge.
|
