Assign Values To Names In A Dropdown List?

Is it possible to assign values to names in a list, so that when you validate it as a drop-down list, you can select a name from the drop-down and it's corresponding value will be added to separate cell? Basically, I have survey questions which have five possible responses: Excellent - Very Good - Good - Fair - Poor. We want to assign a value to each, 5 for Excellent, 4 for Very Good and so on, so that when a response is selected from a drop-down, it's value appears in a separate cell (so that we can calculate a total and average score from the selections).