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DA0-001 Practice Questions

Question # 1
A data analyst is asked on the morning of April 9, 2020, to create a sales report that identifies sales year to date. The daily sales data is current through the end of the day. Which of the following date ranges should be on the report?
A. January 1, 2020 to April 1, 2020
B. January 1, 2020 to April 7, 2020
C. January 1, 2020 to April 8, 2020
D. January 1, 2020 to April 9, 2020


D. January 1, 2020 to April 9, 2020


Question # 2
A data analyst has been asked to create an ad-hoc sales report for the Chief Executive Officer (CEO). Which of the following should be included in the report?
A. The sales representatives' home addresses.
B. Line-item SKU numbers.
C. YTD total sales.
D. The customers' first and last names.


C. YTD total sales.

Explanation: The report for the CEO should include YTD total sales, as this will provide a high-level overview of the sales performance of the company and show how it is meeting its annual goals. The other options are not appropriate for the CEO, as they are either too detailed or irrelevant for the report. The sales representatives’ home addresses, line-item SKU numbers, and customers’ first and last names are not related to the sales performance and might compromise the privacy and security of the data.

Question # 3
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.

Question # 4
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 # 5
A sales analyst needs to report how the sales team is performing to target. Which of the following files will be important in determining 2019 performance attainment?
A. 2018 goal data
B. 2018 actual revenue
C. 2019 goal data
D. 2019 commission plan


C. 2019 goal data

Explanation:
Answer: C. 2019 goal data

To report how the sales team is performing to target, the sales analyst needs to compare the actual sales revenue with the expected or planned sales revenue for the same period. The 2019 goal data is the file that contains the expected or planned sales revenue for the year 2019, which is the target that the sales team is aiming to achieve. By comparing the 2019 goal data with the 2019 actual revenue, the sales analyst can calculate the performance attainment, which is the percentage of the goal that was met by the sales team.

Option A is incorrect, as 2018 goal data is not relevant for determining 2019 performance attainment. The 2018 goal data contains the expected or planned sales revenue for the year 2018, which is not the target that the sales team is aiming to achieve in 2019.

Option B is incorrect, as 2018 actual revenue is not relevant for determining 2019 performance attainment. The 2018 actual revenue contains the actual sales revenue for the year 2018, which is not comparable with the 2019 goal data or the 2019 actual revenue.

Option D is incorrect, as 2019 commission plan is not relevant for determining 2019 performance attainment. The 2019 commission plan contains the rules and rates for calculating and paying commissions to the sales team based on their performance attainment, but it does not contain the expected or planned sales revenue for the year 2019.

Question # 6
A military commander would like to see the health scorecards of the troops daily and filter them based on gender and rank. Considering this data is PHI, which of the following would be the best way for the commander to view the information?
A. An emailed report
B. A password-protected dashboard
C. A daily printout of a report
D. A cloud-hosted spreadsheet


B. A password-protected dashboard

Explanation:
A password-protected dashboard is a type of web-based application that can display the health scorecards of the troops in a secure and interactive way. A password-protected dashboard can provide the following benefits for the commander:
It can protect the PHI data from unauthorized access or disclosure by requiring a valid username and password to log in. This can ensure that only the commander and other authorized personnel can view the information12
It can allow the commander to filter the data based on gender and rank by using drop-down menus, sliders, checkboxes, or other controls. This can enable the commander to customize the view and focus on the relevant data13
It can update the data daily by connecting to a data source that refreshes automatically or on demand. This can ensure that the commander always sees the latest and most accurate information14
It can present the data in a visual and intuitive way by using charts, graphs, tables, or other elements. This can help the commander to understand and analyze the data more easily and effectively1

Question # 7
Which of the following is an example of a discrete data type?
A. 8in (20cm)
B. 5 kids
C. 2.5mi (4km)
D. 10.7lbs (4.9kg)


B. 5 kids

Explanation: A discrete data type is a data type that can only take on a finite number of values, such as integers or categories. An example of a discrete data type is the number of kids, as it can only be a whole number. The other options are examples of continuous data types, as they can take on any value within a range. The length in inches or centimeters, the distance in miles or kilometers, and the weight in pounds or kilograms are all continuous data types.

Question # 8
Which of the following is a relational database?
A. SQL
B. Excel
C. JSON
D. NoSQL


A. SQL


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CompTIA DA0-001 Exam Dumps

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