My Math Forum Probability of different explanations for exam paper

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July 9th, 2015, 06:08 AM   #2
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I would argue that the class average is a useless way to determine whether people pass or not. The class average will be different each year, so some years the paper is more difficult than others despite the material being exactly the same. In years with a high average mark, the will be students that fail that are better than some of the students that pass in years with a low average.

This effect is magnified by the small sample size of a single class.

Quote:
 Originally Posted by Stuart B W There were 10 questions (tasks) which my daughter did not fulfill which had no ticks on the left and zero
Are you saying that your daughter was asked these questions, but did not reply? That she was asked these questions and replied but her answers were incorrect? Or that she was not asked these questions.

Any attempt to estimate likelihood from a single paper is going to produce a highly uncertain result because of the small sample size of one paper. You should ask the examiner/university to provide counts for the different incidence of markings across the whole class to get a better sample size.

July 9th, 2015, 06:14 AM   #3
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Quote:
 Originally Posted by Stuart B W My daughter is appealing the result of a verbal examination.
You have called into question the competence of the examiner. Make sure this matter is considered by an external assessor.

July 9th, 2015, 06:53 AM   #4
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Quote:
 Originally Posted by v8archie Any attempt to estimate likelihood from a single paper is going to produce a highly uncertain result because of the small sample size of one paper. You should ask the examiner/university to provide counts for the different incidence of markings across the whole class to get a better sample size.
That would be very helpful. I doubt they'll play ball, though.

 July 9th, 2015, 06:56 AM #5 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,512 Thanks: 2514 Math Focus: Mainly analysis and algebra Me too, but if you ensure that the data you ask for is completely anonymous, the chances will go up from zero to very unlikely.
 July 9th, 2015, 08:54 AM #6 Newbie   Joined: Jul 2015 From: Scotland Posts: 3 Thanks: 0 Thank you We have asked them for all the other papers for that examiner to look at how ticks/notes correlate with marks awarded Thank you
 July 9th, 2015, 09:34 AM #7 Math Team   Joined: Dec 2013 From: Colombia Posts: 7,512 Thanks: 2514 Math Focus: Mainly analysis and algebra The answer to that will be "no". If I were a student at that college, I would heartily object to another student being allowed to review my paper.

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