“This quiz is not for judgment — it’s simply to help identify your strengths and areas for improvement.”
What is the main difference between an INNER JOIN and a LEFT JOIN in SQL?
Which statement is TRUE about a clustered index?
What is the BEST way to handle missing data when it is minimal and randomly distributed?
Which of the following is NOT a best practice for data visualization?
Which statement correctly explains the difference between correlation and causation?
In building a dashboard, what is the first step?
What is the primary goal of A/B testing?
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