# Calculations

Calculations allow you to answer questions that cannot be answered by the source columns.

Data module calculations are available to all Cognos® Analytics components, explorations, dashboards, stories, or reports, that use the data module as a source.

Data modules support the following types of calculations:

- Stand-alone calculations
These types of calculations, also referred to as global calculations, reside outside of a table in a data module. Stand-alone calculations can refer to columns in any table in the module. You can move a stand-alone calculation into a folder to better organize items in the data module.

- Embedded calculations
These types of calculations, also referred to as table calculations, reside within a table in a data module. Embedded calculations can refer only to columns in the same table.

You can create basic arithmetic calculations, and more complex, custom calculations.