The Field Computations panel specifies aggregate computations for fields used as summary values in a report. Aggregate computations allow you to add numeric field values, calculate the average of multiple numeric field values, retrieve the smallest or largest numeric field value in a group of items, or count the number of items returned by an existing query. For example, if your report groups Project items by state and includes Actual Budget and Estimated Budget fields, you could display the totals for theActual Budget and Estimated Budget fields in each state grouping.

To specify the format layout for an aggregate computation as it displays in the report, select the aggregate computation, and click Format. The Format layout forfield name dialog box displays. For more information, see Format Layout for field name Dialog Box.