This action calculates the arithmetic mean of all its inputs.

__ Triggers __

The action's template has a single trigger (**Numbers**),
but the action can be used
with any number of triggers. The action
uses any of the numbers received through any of the triggers:

- For any non-repetitive trigger: using the number received through the trigger (if any);
- For any repetitive trigger (e.g. the
**Numbers**trigger in the action's template): using any of the numbers received through the trigger (if any).

__Exits__

The two exits represent two mutually exclusive possibilities:

**<Mean>** (non-repetitive numeric exit [required])**:** The
calculated arithmetic mean of all input numbers.

**No Input** (error exit [not required])**:** Charged if no input
numbers are received (and thus the mean cannot be calculated).

__ Usage Examples __

** Test1 ** (need to complete)