You cannot just use [Response1]+[Response2]+[Response3]+[Respons
e4]+[Response5] because those are not fields in your table. Based on your table structure each project probably gets surveyed a few times?
How did you want to view the summarized results? By project number, then by survey number? You could design an IIf function that works within a query that calculates the total scores. It would just be a bit unwieldy. My prefernce would be to either create a custom function or to create another table that you could join to your existing table. That table would function only to hold the score weightings.
This is IF the values of 1,2,3,4 will always translate into 2,5,8,10.
On the other hand, you could just skip all of that (which would skip all of the learning that would be involved) by using a mathematical trick. Being a math geek, I happened to notice that this function:
Round([QuestionId]* 2.5,0)
would do the trick for you. It will transform 1,2,3,4 into 2,5,8, and 10. If you'd like to use this shortcut solution, just create a calculated column with that function.
Now, you must be using Access 2000 or higher to use the Round function. But if you're using Access 97, we can devise a workaround.