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  3. Analyzing Business Data in SQL

Exercise

Interquartile range

The final value that Dave wants is the count of users in the revenue interquartile range (IQR). Users outside the revenue IQR are outliers, and Dave wants to know the number of "typical" users.

Return the count of users in the revenue IQR.

Instructions 1/3

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  • Return a table of user IDs and generated revenues for each user.