For what purpose do users typically add a calculated field in a PivotTable?

Users typically add a calculated field in a PivotTable to perform calculations based on existing fields. This functionality allows them to create new data sets or metrics that combine or manipulate data directly within the PivotTable environment. For example, if a PivotTable summarizes sales data, a calculated field could be used to determine the profit margin by subtracting costs from sales revenue or calculating commission based on the sales figures.

This capability is particularly valuable for analyzing data dynamically, as it harnesses the existing fields' values to derive new insights without altering the original data set. It enhances the analytical power of the PivotTable by allowing users to tailor calculations specific to their reporting needs without needing to create separate data columns in the source data.