This tells pandas to build a pivot table, using the "region" column as the index, and the small, large, and "extra large" ...

Understanding, organizing, and validating data directly affects the accuracy of stories. New tools make cleaning accessible ...

Learn when FILTER beats XLOOKUP, when it does not, and how to handle multiple matches, nth items, and multi-condition lookups with clear steps.

Excel offers no such constraint. If someone is determined to enter bad data, they can simply paste values over a validated ...