Master Your CompTIA Data+ Exam Preparation with Updated DA0-001 Dumps (V13.02) – Check DA0-001 Free Dumps (Part 1, Q1-Q40)

1. A data analyst needs to calculate the mean for Q1 sales using the data set below:

Which of the following is the mean?

2. A customer list from a financial services company is shown below:

A data analyst wants to create a likely-to-buy score on a scale from 0 to 100, based on an average of the three numerical variables: number of credit cards, age, and income.

Which of the following should the analyst do to the variables to ensure they all have the same weight in the score calculation?

3. Which of the following actions should be taken when transmitting data to mitigate the chance of a data leak occurring? (Choose two.)

4. 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?

5. Which of the following BEST describes the issue in which character values are mixed with integer values in a data set column?

6. Which of the following is a process that is used during data integration to collect, blend, and load data?

7. An analyst has received the requirements for an internal user dashboard. The analyst confirms the data sources and then creates a wireframe.

Which of the following is the NEXT step the analyst should take in the dashboard creation process?

8. A data analyst has been asked to derive a new variable labeled “Promotion_flag” based on the total quantity sold by each salesperson.

Given the table below:

Which of the following functions would the analyst consider appropriate to flag “Yes” for every salesperson who has a number above 1,000,000 in the Quantity_sold column?

9. Given the diagram below:

Which of the following data schemas shown?

10. A company’s marketing department wants to do a promotional campaign next month. A data analyst on the team has been asked to perform customer segmentation, looking at how recently a customer bought the product, at what frequency, and at what value.

Which of the following types of analysis would this practice be considered?

11. A publishing group has requested a dashboard to track submissions before publication. A key requirement is that all changes are tracked, as multiple users will be checking out documents and editing them before submissions are considered final.

Which of the following is the BEST way to meet this stakeholder requirement?

12. The number of phone calls that the call center receives in a day is an example of:

13. A data analyst is asked to create a sales report for the second-quarter 2020 board meeting, which will include a review of the business’s performance through the second quarter. The board meeting will be held on July 15, 2020, after the numbers are finalized.

Which of the following report types should the data analyst create?

14. Which of the following would be considered non-personally identifiable information?

15. Which of the following is a common data analytics tool that is also used as an interpreted, high-level, general-purpose programming language?

16. 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?

17. 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?

18. An e-commerce company recently tested a new website layout. The website was tested by a test group of customers, and an old website was presented to a control group.

The table below shows the percentage of users in each group who made purchases on the websites:

Which of the following conclusions is accurate at a 95% confidence interval?

19. 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?

20. Five dogs have the following heights in millimeters:

300, 430, 170, 470, 600

Which of the following is the mean height for the five dogs?

21. Which of the following are reasons to create and maintain a data dictionary? (Choose two.)

22. Which of the following is an example of a at flat file?

23. Given the following graph:

Which of the following summary statements upholds integrity in data reporting?

24. An analyst is required to run a text analysis of data that is found in articles from a digital news outlet.

Which of the following would be the BEST technique for the analyst to apply to acquire the data?

25. An analyst runs a report on a daily basis, and the number of datapoints must be validated before the data can be analyzed. The number of datapoints increases each day by approximately 20% of the total number from the day before. On a given day, the number of datapoints was 8,798.

Which of the following should be the total number of datapoints on the next day?

26. An analyst has been tracking company intranet usage and has been asked to create a chat to show the most-used/most-clicked portions of a homepage that contains more than 30 links.

Which of the following visualizations would BEST illustrate this information?

27. An analyst has generated a report that includes the number of months in the first two quarters of 2019 when sales exceeded $50,000:

Which of the following functions did the analyst use to generate the data in the Sales_indicator column?

28. 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?

29. Which of the following data cleansing issues will be fixed when a DISTINCT function is applied?

30. A county in Illinois is conducting a survey to determine the mean annual income per household. The county is 427sq mi (2.65q km).

Which of the following sampling methods would MOST likely result in a representative sample?

31. Which of the following statistical methods requires two or more categorical variables?

32. Which of the following data manipulation techniques is an example of a logical function?

33. A sales team wants visibility of current sales numbers, pipeline, and team performance. The team would also like to see calculations of individuals’ earned commissions and projected commissions based on sales, but they want that information to be kept confidential.

Which of the following would be the BEST way to provide this visibility?

34. Which of the following is a characteristic of a relational database?

35. 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?

36. Given the following data tables:

Which of the following MDM processes needs to take place FIRST?

37. Which of the following is used for calculations and pivot tables?

38. Given the following report:

Which of the following components need to be added to ensure the report is point-in-time and static? (Choose two.)

39. An analyst has been asked to validate data quality.

Which of the following are the BEST reasons to validate data for quality control purposes? (Choose two.)

40. A research analyst wants to determine whether the data being analyzed is connected to other datapoints.

Which of the following is the BEST type of analysis to conduct?