You can now use statistical functions for advanced analytics including variance analysis, percentile calculations, and distribution measurements.

Calculate salary standard deviation per department

Find median and quartiles for performance scores

Analyze product quality variance with control limits

Compare AVG vs MEDIAN for outlier detection

Combine statistical functions with GROUP BY and HAVING

ROLLUP, CUBE, and GROUPING SETS will teach you to create hierarchical aggregations and multi-dimensional analysis with subtotals and grand totals.