Free CompTIA DA0-001 Practice Test & Real Exam Questions
Andy is a pricing analyst for a retailer. Using a hypothesis test, he wants to assess whether people who receive electronic coupons spend more on average.
What should Andy's null hypothesis be?
What should Andy's null hypothesis be?
Correct Answer: B
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Which of the following should be accomplished NEXT after understanding a business requirement for a data analysis report?
Correct Answer: C
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An analyst wants to include a graph in a quarterly sales report that shows the comparison between two quantitative variables. Which of the following visual diagrams can the analyst use to most effectively represent this relationship?
Correct Answer: C
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Which of the following file formats is best suited to start exploratory analysis within statistical software?
Correct Answer: B
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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 her identifier in the CRM system.
What kind of issues is Angela facing?
Choose the best answer.
While performing an initial quality check, she realizes that her employee ID is not associated with her identifier in the CRM system.
What kind of issues is Angela facing?
Choose the best answer.
Correct Answer: C
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Which of the following types of data manipulation functions should a data analyst use to implement a YES
/NO condition in a spreadsheet?
/NO condition in a spreadsheet?
Correct Answer: C
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A data analyst needs to calculate the mean for Q1 sales using the data set below:
Which of the following is the mean?
Which of the following is the mean?
Correct Answer: D
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Analytics reports should follow corporate style guidelines.
Correct Answer: A
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Given the following tables:
Which of the following will be the dimensions from a FULL JOIN of the tables above?
Which of the following will be the dimensions from a FULL JOIN of the tables above?
Correct Answer: B
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An analyst for a concert venue is analyzing the number of tickets sold for a recent event. Which of the following types of data is the number of sold tickets an example of?
Correct Answer: C
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Which of the following is an example of a data-mining ETL tool?
Correct Answer: B
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A data scientist wants to see which products make the most money and which products attract the most customer purchasing interest in their company.
Which of the following data manipulation techniques would he use to obtain this information?
Which of the following data manipulation techniques would he use to obtain this information?
Correct Answer: C
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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?
427sq mi (2.65q km). Which of the following sampling methods would MOST likely result in a representative sample?
Correct Answer: C
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Given the diagram below:
Which of the following steps is missing?
Which of the following steps is missing?
Correct Answer: C
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Given the following data set:
Which of the following is the best reason for cleansing the data?
Which of the following is the best reason for cleansing the data?
Correct Answer: D
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