Petra,
I agree with Lev that Moodle is really not set up to do this. That said, you have options. There is a third party Questionnaire that might work better...except it doesn't score. You can download all the results, though into a nifty little spreadsheet.
I also needed an assessment in Moodle but opted to created a SCORM module which scores point vs. no point and then assigned it to report a specific score. My assessment is actually testing whether assessors are doing the assessments right so it has a pass fail dependant on being w/in a range, so Moodle couldn'thandle it. I set the SCORM to recognize each item is worth a value and upon selection, a variable is "set". On submission, the variables are tallied for a final score. This might be your best option, as you can force some SCORM authoring softwares to report specific scores to Moodle (Lectora gives a lot of flexibility, but is quite pricey. Captivate is less flexible (not sure it can do what Lectora can, may require higher levels of comp skill than I have), but is cheaper. Many other options for SCORM development, also exists like eXe (free) and Articulate, etc). The down side to SCIRM is that there is no easy, nice-looking way to collate the results.
If you're set on using the quiz, there might be a few works-arounds.
First question, yes, you can set a custom amount to each question (which is where the work around comes in). Each quiz question is 1 point by default. You can change the number. Each quiz is set to default to a total of 10 points. In theory, you could set each quiz question to be worth, say 5 points. Answer 1 is worth 0% or 0 points. Answer 2 is worth 20% or 1 point. Answer 3 is worth 40% or 2 points, etc.
To your second question, you can set the system to show the score but it typically shows the score & the percent, which may or may not be what you want...alternatives are:
- Set the quiz not to show the score (hence, no percentage) but they could see their final point total by clicking on the quiz again.
- Set the quiz to show the score with directions to disregard the percentatage.
- Set the quiz to not show the score but show the Overall feedback. Add a link in the overall feedback that takes them to the attempts area (where they say they want to take the quiz) regardless of grade boundary (100%-0%).
If you want to set point totals higher than 1 but don't want the total score possible to be the total number of points possible, you can set the quiz grade to a lesser number of your choosing.
In the grade book, you may want to edit the grade item to report real, not percentage and make sure you don't set passing/not passing options.
