Setting scoring as invalid for postcorrected sheets when too many boxes marked

Added by Steve Murphy over 7 years ago

Hi,

I have been using AMC to run tests where I have been using photocopied postcorrected sheets. Some of the questions are multiple choice multiple answer and some multiple choice single answer. This works well with a default scoring strategy of formula=NMC, except when a students marks more than the indicated number of answers. So, an example would be that the postcorrected sheet shows that there are two correct answers, but the student marks three. In this case I want the mark to be zero and the question to be flagged as invalid so I can check the sheet manually.

By using \scoringDefaultM{formula=((NMC+NBC)>NB) ? 0: NBC, e=0} I can get the mark to be zero, but this will not mark it as invalid.

In another post I noticed that there is a set.INVALID flag, so I tried: \scoringDefaultM{formula=NBC, e=0, set.INVALID=(NBC+NMC)>NB) but this did not work.

Suggestions gratefully received!

Thanks in advance.

Steve


Replies (4)

RE: Setting scoring as invalid for postcorrected sheets when too many boxes marked - Added by Frédéric Bréal over 7 years ago

I would write

 \scoringDefaultM{formula=(NMC+NBC>NB ? 0: NBC), e=0}

RE: Setting scoring as invalid for postcorrected sheets when too many boxes marked - Added by Alexis Bienvenüe over 7 years ago

Which version of AMC do you use? set.INVALID is quite recent.

RE: Setting scoring as invalid for postcorrected sheets when too many boxes marked - Added by Steve Murphy over 7 years ago

Hi Alexis,

1.2.1 svn1403. I take it this is too old to support set.INVALID?

Thanks,

Steve

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