CompTIA DA0-001 Questions Answers

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CompTIA DA0-001 Sample Questions

Question # 1

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

A. Snowflake.
B. Square.
C. Spiral.
D. Sphere.

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Question # 2

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

A. XSS
B. ELT
C. ETL
D. APIs

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Question # 3

Which one of the following is a measure of dispersion?

A. Variance.
B. Mode.
C. Median.
D. Mean.

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Question # 4

Analytics reports should follow corporate style guidelines.

A. True.
B. False.

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Question # 5

Alex wants to use data from his corporate sale, CRM, and shipping systems to try and predict futuresales.Which of the following systems is the most appropriate?Choose the best answer.

A. Data mart.
B. OLAP.
C. Data Warehouse.
D. OLTP.

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Question # 6

Samantha needs to share a list of her organization's top 50 customers with the VP of sales.She would like to include the name of the customer, the business they represent, their contactinformation, and their total sales over the past year.The VP does not have any specialized analytics skills or software but would like to make somepersonal notes on the dataset.What would be the best tool for Samantha to use to share this information?

A. Power BI.
B. Microsoft Excel.
C. Minitab.
D. SAS.

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Question # 7

Jhon is working on an ELT process that sources data from six different source systems.Looking at the source data, he finds that data about the sample people exists in two of six systems.What does he have to make sure he checks for in his ELT process?Choose the best answer.

A. Duplicate Data.
B. Redundant Data.
C. Invalid Data.
D. Missing Data.

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Question # 8

Daniel is using the structured Query language to work with data stored in relational database.He would like to add several new rows to a database table.What command should he use?

A. SELECT.
B. ALTER.
C. INSERT.
D. UPDATE.

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Question # 9

Amanda needs to create a dashboard that will draw information from many other data sources andpresent it to business leaders.Which one of the following tools is least likely to meet her needs?

A. QuickSight.
B. Tableau.
C. Power BI.
D. SPSS Modeler.

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Question # 10

Andy is a pricing analyst for a retailer. Using a hypothesis test, he wants to assess whether peoplewho receive electronic coupons spend more on average.What should Andy's null hypothesis be?

A. People who receive electronic coupons spend more on average.
B. People who receive electronic coupons spend less on average.
C. People who receive electronic coupons do not spend more on average.
D. People who do not receive electronic coupons spend more on average.

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Question # 11

Angela is aggregating data from CRM system with data from an employee system.While performing an initial quality check, she realizes that her employee ID is not associated with heridentifier in the CRM system.What kind of issues is Angela facing?Choose the best answer.

A. ETL process.
B. Record linkage.
C. ELT process.
D. System integration.

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Question # 12

A data analyst wants to create "Income Categories" that would be calculated based on the existingvariable "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 "IncomeCategories"?

A. Data merge
B. Derived variables
C. Data blending
D. Data append

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Question # 13

A data scientist wants to see which products make the most money and which products attract themost customer purchasing interest in their company.Which of the following data manipulation techniques would he use to obtain this information?

A. Data append
B. Data blending
C. Normalize data
D. Data merge

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Question # 14

Which of the following value is the measure of dispersion "range" between the scores of tenstudents in a test.The scores of ten students in a test are 17, 23, 30, 36, 45, 51, 58, 66, 72, 77.

A. 90
B. 60
C. 70
D. 80

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Question # 15

The ACME Corporation hired an analyst to detect data quality issues in their Excel documents. Whichof the following are the most common issues? (Select TWO)

A. Apostrophe.
B. Commas.
C. Symbols.
D. Duplicates.
E. Misspellings.

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CompTIA DA0-001 Reviews