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Let's say we have 6 columns of data. How would you compare the data of the first 3 columns with those of the last 3?
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Data Analyst
Marketer
General
Consider both statistical comparison methods (means, distributions) and SQL techniques for restructuring the data to facilitate direct comparison.
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Hard Difficulty
Hard questions require advanced understanding and critical thinking. Here, your problem-solving skills are key, as these questions often involve complex scenarios needing in-depth analysis and well-structured responses.
SQL question
SQL questions test your ability to work with relational databases. Demonstrate your proficiency in writing queries, understanding database design, optimizing performance, and extracting meaningful information from structured data.