If you use Radio Buttons for your responses (This allows just one answer) then the Radio Button Group (i.e. the question) can have a value attached to each answer.
The values can be added up at the end.
Be aware, however, that if a Radio Button Group is not answered at all then it will have the value of 0.
If you are using checkboxes for your responses (This allows multiple answers) then you need to add in some logic which is based on the responses. Each checkbox will need a corresponding input object. Then the behavior would be:
If ISO 9000 is checked then value = 1
If ISO 9000 is not checked then value = 0