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  3. PostgreSQL Summary Stats and Window Functions

Exercise

Top, middle, and bottom thirds

Splitting your data into thirds or quartiles is often useful to understand how the values in your dataset are spread. Getting summary statistics (averages, sums, standard deviations, etc.) of the top, middle, and bottom thirds can help you determine what distribution your values follow.

Instructions 1/2

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  • Split the athletes into top, middle, and bottom thirds based on their count of medals.