Tally/sum/average
You can use the tally/sum/average operation to tally, sum, or average the values of fields associated with documents or objects.
This operation is commonly used to determine the number of pages in a print job or production. For documents, it's recorded under the document history.
Considerations

You can only use tally/sum/average on fixedlength text, choice, user, and number fields.

You can't use mass operations on Data Gridenabled fields.

Tally/Sum/Average calculates the mean of a column without counting null as 0. When a column contains null values, the operation yields a different result from an average calculated by summing the column and dividing the total document count. To include null values in the denominator of a Tally/Sum/Average calculation, you must change the null value to 0 to ensure the inclusion of those documents.
To perform a tally/sum/average operation, perform the following steps:
 Choose whether to tally/sum/average Checked items or All items in the current returned set
 Select Tally/Sum/Average in the dropdown menu. The Tally/Sum/Average popup displays with options for the following fields:
 Field  used as the basis of the calculation. For example, you could select a custodian field if you want a tally of these entries.
 Function  the option performed on the field:
 Tally  lists a count for each item type in the specified fields of all selected documents or objects.
 Sum  adds the values in the specified numeric fields of all selected documents or objects.
 Average  calculates mean value of the specified numeric fields for all selected documents or objects.
 Filter the results.
 Clear All filter text.
 Browse through the results using the blue arrows.
 Sort the results.
 Export results to an external file.
The result of a tally is similar to a summary report; it outlines the values of a field and the count for each. The tally runs across the entire section, but only reports the top 100,000 values.
After your results appear, you can perform the following actions: