In the View Responses tab you can add data values to your choice fields. You can add new columns and add formulas to those columns to make some calculation depending on the value of certain cells (fields).
You can do all this with the Free subscription so you can test it out and play with it.
I just explained yesterday how to add numeric values to Rating Scale but the same apply to all choice fields
Here are also good links that might help you
Shortcuts and Functions
Not sure if this is what you are looking for. Let me know.