## Confusion in \scoring

Hi!
First of all thanks for such a wonderful tool...

I have a little confusion regarding \scoring.

I have a question which has more than one answer. I want to give full 2 marks for COMPLETE CORRECT answer (as I understand {mz=2}) and deduct 1 mark for wrong or partly correct answer (as I understand {b=-1}).

I tried giving {mz=2,b=-1}, but it didnt work. The student gets 0 marks.

Can you please tell me how to achieve this?

VInay

### Replies (6)

#### RE: Confusion in \scoring - Added by Alexis Bienvenüeover 10 years ago

`mz` is for "max or zero": `mz=2` will give 2 points for complete correct answer, and zero otherwise.

I'm not sure I understand your need correctly, but perhaps `haut=2` is for you: with this scoring strategy, a complete correct answer gets 2 points, and each wrong answer (a box that should be ticked but that is not, or a box that should not be ticked but that is ticked) deducts 1 point (with 0 as a floor).

#### RE: Confusion in \scoring - Added by VInay Waghover 10 years ago

Hi Alexis!

Let me explain my problem with an example.

Question: Which of the following numbers are prime?

Choices:
\wrongchoice{1}
\correctchoice{2}
\correctchoice{3}
\wrongchoice{4}
\correctchoice{5}
\wrongchoice{6}
\correctchoice{7}
\wrongchoice{8}
\wrongchoice{9}
\wrongchoice{10}

My marking scheme is as follows:
A student ticks 2,3,5,7 ---> Gets full 2 marks (This I can achieve by {haut=2})
A student ticks 2,3,5 ---> Gets `-1`
A student ticks 2 ---> Gets `-1`
A student ticks 2,4,6 ---> Gets `-1`

In fact any incorrect or partially correct solution gets -1.

I also tried {haut=2,p=-1}, assuming 2 marks for correct and then `haut` will start deducting for each wrong answer but I allow the system go below only upto -1.

VInay

#### RE: Confusion in \scoring - Added by Alexis Bienvenüeover 10 years ago

Thanks for this example: this time I think I got it.
I think you can try `\scoring{d=1,p=-1,b=0,m=-100}`:
• `d=1` starts with 1 point
• `b=0` adds 0 points for each correct answer (no change)
• `m=-100` substracts 100 points for each wrong answer
Then, the complete correct answer gets 1 point, and any incorrect or partially correct answer gets a negative score, so that with `p=-1`, these negative scores are floored to `-1` exactly.

With current development version of AMC, `\scoring{mz=1,p=-1}` should also work, but I'm afraid this was not working with some old versions of AMC.

#### RE: Confusion in \scoring - Added by VInay Waghover 10 years ago

Thanks!

This works perfectly... Just that I had to add {MAX=2} along with d,p,b,m.

Thanks once again for such a wonderful tool.

VInay

#### RE: Confusion in \scoring - Added by Alexis Bienvenüeover 10 years ago

Oops, yes, in fact for you `d=2` and not `1`. You should not have to use `MAX=2`. `MAX` is only useful in rare cases.

#### RE: Confusion in \scoring - Added by VInay Waghover 10 years ago

I had figured that out and had replaced {d=2}. Just now tried with removing MAX as well... Seemt to be working fine.

VInay

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