CompTIA DA0-002 - Questions & Answers
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A data analyst created a dashboard to illustrate the traffic volume and mean response time for a call center. The traffic data is current, but the mean response time has not updated for more than an hour.
Which of the following is the best way to verify the data's freshness?
A data analyst team needs to segment customers based on customer spending behavior. Given one million rows of data like the information in the following sales order table:
Which of the following techniques should the team use for this task?
A senior manager needs a report that can be generated and accessed at any time.
Which of the following delivery methods should a data analyst use?
A data analyst is preparing a survey for Paralympic Games athletes.
Which of the following should the analyst consider when creating this survey?
Which of the following tables holds relational keys and numeric values?
The following SQL code returns an error in the program console:
SELECT firstName, lastName, SUM(income)
FROM companyRoster
SORT BY lastName, income
Which of the following changes allows this SQL code to run?
A user needs a report that shows the main causes of customer churn rate in a three-year period.
Which of the following methods provides this information?
Which of the following best describes the semi-structured data that is gathered when web scraping?
A data analyst is analyzing the following dataset:
Which of the following methods should the analyst use to determine the total cost for each transaction?
A company has a document that includes the names of key metrics and the standard for how those metrics are calculated company-wide.
Which of the following describes this documentation?