Quiz Questions Already Passed

TRUE OR FALSE: A data analyst determines an appropriate sample size for a survey. They can check their work by making sure the confidence level percentage plus the margin of error percentage add up to 100%. {Ans: False}Fill in the blank: Data _____ refers to the accuracy, completeness, consistency, and trustworthiness of data throughout its life cycle. {Ans: Integrity}A data analyst wants to find out how many people in Utah have swimming pools. It's unlikely that they can survey every Utah resident. Instead, they survey enough people to be representative of the population. This describes what data analytics concept? -Margin of error -Statistical significance -Confidence level -Sample {Ans: -Sample}Which of the following principles are key elements of data integrity? Select all that apply. -Consistency -Accuracy -Selectivity -Trustworthiness {Ans: -Consistency -Accuracy -Trustworthiness}To correct a typo in a database column, where should you insert a CASE statement in a query? -As a GROUP BY clause -As a FROM clause -As a SELECT clause -As an ORDER BY clause {Ans: -As a SELECT clause}TRUE or FALSE: To evaluate how well two or more data sources work together, data analysts use data mapping. {Ans: True}