Adjusting Marking strategy

Added by Joost Schalken-Pinkster almost 10 years ago

Let me begin by thanking you for your wonderful tool.

I was wondering if it is possible to adjust the final marking formula of an exam, so I can compensate for guessing in a multiple choice exam. E.g. with a test with 20 true-false questions, 10 questions will be correct 'by chance alone', so I would expect students to at least score 15 correct answers for a passing grade [10 (average correctly guessed answers) + 5 (50% of the remaining questions) = 15]. In the Netherlands a passing grade is 5.5 out of 10.

I have tried using the command \scoringDefaultS and \scoring{SUF....} but I cannot seem to get it to work.

Could somebody help me?

Thanks in advance,
Joost Schalken


Replies (2)

RE: Adjusting Marking strategy - Added by Alexis Bienvenüe almost 10 years ago

The final marking formula cannot currently be changed.
Perhaps you can set the questions scoring strategy to get your result, giving appropriate values to m (score for a wrong answer) and b (score for a right answer).
You need a final score equal to 5.5 for 15 right and 5 wrong answers : 15 b + 5 m = 5.5
You need a final score equal to 10 for all right answers : 20 b = 10
So you can try

\scoringDefaultS{b=0.5,m=-0.4}

(I'm sorry I did not try it, perhaps you'll have to tweak it).
Note that with this scoring strategy, giving 15 right answers and not responding to others will result to a final score equal to 7.5.

RE: Adjusting Marking strategy - Added by Devin Casenhiser over 9 years ago

I'm assuming you've though of using an "off-line" strategy (Export the file to OpenOffice (you have to change the export option in the Reports tab), to get a spreadsheet and can add a column with a formula to adjust the grade of each student's exam.)

Of course, that doesn't change how the exams are marked, but does do a quick calculation for you.

Cheers!
Devin

(1-2/2)