CompTIA Data+ Certification DA0-001 Sample Questions

Jonnie Karnath2023-10-28T03:56:40+00:00

If you are interested in obtaining the CompTIA Data+ Certification, there are several ways you can enhance your preparation for the exam. One effective method is to practice using the latest CompTIA Data+ Certification DA0-001 Sample Questions, which are available from Certspots. By dedicating time to these DA0-001 practice questions, you will not only boost your confidence but also gain a deeper understanding of the topics covered in the exam. This comprehensive preparation will help you perform better and increase your chances of success in the certification test.

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1. Which of the ing is the correct ion for a tab-delimited spre file?

tap

tar

2. Which one of the following values will appear first if they are sorted in descending order?

Aaron.

Molly.

Xavier.

Adam.

3. 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?

Histogram

Pie

Line

Scatter pot

Waterfall

4. Which of the following BEST describes standard deviation?

A measure that is used to establish a relationship between two variables

A measure of how data is distributed

A measure of the amount of dispersion of a set of values

A measure that is used to find the significant difference between variables

5. An analysts building a monthly report for production and wants to ensure the audience is aware of its once-a-month cadence.

Which of the following is the MOST important to convey that information?

The date of the dashboard build

The data refresh date

A report summary

Frequently asked questions

6. 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?

Date

Mathematical

Logical

Aggregate

7. Which of the following variable name formats would be problematic if used in the majority of data software programs?

First_Name_

FirstName

First_Name

First Name

8. Given the table below:

Which of the following variable types BEST describes the “Year” column?

Numeric

Date

Alphanumeric

Text

9. A data analyst is developing a dashboard to track and monitor metrics.

Which of the following best practices should be taken into during the FIRST pment process?

Create a A Aupirarrame:

Deploy to production.

Copy a dashboard design from the Internet.

Develop a dashboard.

10. An analyst needs to conduct a quick analysis.

Which of the following is the FIRST step the analyst should perform with the data?

Conduct an exploratory analysis and use descriptive statistics.

Conduct a trend analysis and use a scatter chart.

Conduct a link analysis and illustrate the connection points.

Conduct an initial analysis and use a Pareto chart.

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11. Afinancial institution is reporting on sales performance to a company at the account level. Due to the sensitive nature of the government the does il with, some account information is not shown.

Which of the following fields should be masked?

Sales volume

Start date

Product name

Customer name

12. Randy scored 76 on a math test, Katie scored 86 on a science test, Ralph scored 80 on a history test, and Jean scored 80 on an English test.

The table below contains the mean and standard deviation of the scores for each of the courses:

Using this information, which of the following students had the BEST score?

Randy

Katie

Ralph

Jean

13. Which of the following should be accomplished NEXT after understanding a business requirement for a data analysis report?

Rephrase the business requirement.

Determine the data necessary for the analysis.

Build a mock dashboard/presentation layout.

Perform exploratory data analysis.

14. 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?

Recode the variables.

Calculate the percentiles of the variables.

Calculate the standard deviations of the variables.

Normalize the variables.

15. Given the following data:

Which of the following BEST describes the data set?

There is data bias.

The data is incomplete.

The data is inconsistent.

The data is outliers.

16. Which one of the following would not normally be considered a summary statistic?

z-score.

Mean.

Variance.

Standard deviation.

17. Jenny wants to study the academic performance of undergraduate sophomores and wants to determine the average grade point average at different points during an academic year.

What best describes the data set she needs?

Sample.

Observation.

Variable.

Population.

18. What SQL command is used to delete an entire table from a database?

DRO

MODIF

DELET

ALTE

19. Q3 2020 has just ended, and now a data analyst needs to create an ad-hoc sales report that demonstrates how well the Q3 2020 promotion went versus last year's Q3 promotion.

Which of the following date parameters should the analyst use?

2019 vs. YTD 2020

Q3 2019 vs. Q3 2020

YTD 2019 vs. YTD 2020

Q4 2019 vs. Q3 2020

20. Which of the following is a control measure for preventing a data breach?

Data transmission

Data attribution

Data retention

Data encryption

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21. A data analyst is creating a report that will provide information about various regions, products, and time periods.

Which of the following formats would be the MOST efficient way to deliver this report?

A workbook with multiple tabs for each region

A daily email with snapshots of regional summaries

A static report with a different page for every filtered view

A dashboard with filters at the top that the user can toggle

22. A data analyst must separate the column shown below into multiple columns for each component of the name:

Which of the following data manipulation techniques should the analyst perform?

Imputing

Transposing

Parsing

Concatenating

23. 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?

394mm

405mm

493mm

504mm

24. The current date is July 14, 2020. A data analyst has been asked to create a report that shows the company’s year-over-year Q2 2020 sales.

Which of the following reports should the analyst compare?

A Q2 2020 and Q4 2019

YTD 2020 and YTD 2019

Q2 2020 and Q2 2019

Q2 2020 and Q2 2021

25. 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 real-time monitor that allows the manager to view performance the day the campaign was launched

A sell-service dashboard that allows the manager to look at the company's annual budget performance

A spreadsheet of the raw data from all marketing campaigns and channels

A summary with statistics, conclusions, and recommendations from the data analyst

26. A database consists of one fact table that is composed of multiple dimensions. Depending on the dimension, each one can be represented by a denormalized table or multiple normalized tables.

This structure is an example of a:

transactional schema.

star schema.

non-relational schema.

snowflake schema.

27. The director of operations at a power company needs data to help identify where company resources should be allocated in order to monitor activity for outages and restoration of power in the entire state.

Specifically, the director wants to see the following:

* County outages

* Status

* Overall trend of outages

INSTRUCTIONS:

Please, select each visualization to fit the appropriate space on the dashboard and choose an appropriate color scheme. Once you have selected all visualizations, please, select the appropriate titles and labels, if applicable. Titles and labels may be used more than once.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

28. Which one of the following is a common data warehouse schema?

Snowflake.

Square.

Spiral.

Sphere.

29. 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?

Include a line chart using the site and average sales per customer.

Include a pie chart using the site and sales to average sales per customer.

Include a scatter chart using sales volume and average sales per customer.

Include a column chart using the site and sales to average sales per customer.

30. You are working with a professional statistician to perform an analysis and would like to use a statistics package.

Which one of the following would be the most appropriate?

Rapid Miner.

QLI

Power B

Minitab.

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31. Which one of the following in NOT a common data integration tool?

XSS

ELT

ETL

APIs

32. Given the diagram below:

Which of the following data schemas shown?

Key-value pairs

Online transactional processing

Data lake

Relational database

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

To improve data acquisition

To remember specifics about data fields

To specify user groups for databases

To provide continuity through personnel turnover

To confine breaches of PHI data

To reduce processing power requirements

34. A data analyst wants to create "Income Categories" that would be calculated based on the existing variable "Income".

The "Income Categories" would be as follows:

Income category 1: less than $1.

Income category 2: more than $1 and less than $20,000.

Income category 3: more than $20,001 and less than $40,000.

Income category 4: more than $40,001.

Which of the following data manipulation techniques should the data analyst use to create "Income Categories"?

Data merge

Derived variables

Data blending

Data append

35. 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 product, at what frequency, and at what value.

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

Prescriptive

Trend

Gap

Custer

36. Which of the following describes the method of sampling in which elements of data are selected randomly from each of the small subgroups within a population?

Simple random

Cluster

Systematic

Stratified

37. 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?

Delete any of the responses that do not have “January” written out.

Replace any of the responses that have “01”.

Filter on any of the responses that do not say “January” and update them to “January”.

Sort any of the responses that say “Jan” and update them to “01”.

38. Amanda needs to create a dashboard that will draw information from many other data sources and present it to business leaders.

Which one of the following tools is least likely to meet her needs?

QuickSight.

Tableau.

Power B

SPSS Modeler.

39. Emma is working in a data warehouse and finds a finance fact table links to an organization

dimension, which in turn links to a currency dimension that not linked to the fact table.

What type of design pattern is the data warehouse using?

Star.

Sun.

Snowflake.

Comet.

40. 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?

Conditional formatting

Grouping

Filtering

Sorting

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41. 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?

394mm

405mm

493mm

504mm

42. Exhibit.

Which of the following logical statements results in Table B?

A)

Option A

Option B

Option C

Option D

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

Which of the following is the mean?

$2,466.18

$2,667.60

$3,082.72

$12,330.88

44. What category of data stewardship work is focused on ensuring that the organization respects the wishes of data subjects?

Data quality.

Data privacy.

Data security.

Regulatory compliance.

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

Duplicate data

Missing data

Data outliers

Invalid data type

46. You would like to measure how well an organization is achieving its goals.

What type of analysis should you perform?

Performance analysis.

Outlier analysis.

Predictive analysis.

Trend analysis.

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