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## Adjusting Marking strategy

Added by Joost Schalken-Pinkster over 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 BienvenÃ¼e over 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 10 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

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