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Thread: Need help to prove professor may have altered grades at our university

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    Re: Need help to prove professor may have altered grades at our university




    Quote Originally Posted by Karabiner View Post
    You also mentioned somewhere that for each of the 50 questions,
    0, 1 or 2 points were awarded. What was the format of questions
    and answers? Was it multiple choice? If yes, how did the presentation
    of question and answers actually look like, and how was the scoring
    performed? Or were these open ended questions, and the rater had to
    decide how many points to give to written answers?


    With kind regards

    K.
    The format was 2 points correct structure with side, common carotid artery with incorrect side was 1 point, 0 was if structure was completely wrong. however our university also has a stupid rule, if we got correct structure which has no side- and we mistakely put a side, we would also get 0.

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    Re: Need help to prove professor may have altered grades at our university

    its pretty subjective grading practices based on our examiner, thank you for your help

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    Re: Need help to prove professor may have altered grades at our university

    Quote Originally Posted by swamifez View Post
    its pretty subjective grading practices based on our examiner, thank you for your help
    A rater might repeatedly have considered to stop scoring as soon as
    65 was reached, in order to spare work & effort. Or, since grading is
    subjective, raters might just judge whether a student's total performance
    was good enough to let him pass (and therefore assigned a 65 to him).
    So 65 wouldn't be an upgrading, but a downgrading.

    With kind regards

    K.

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    Re: Need help to prove professor may have altered grades at our university

    Quote Originally Posted by Karabiner View Post
    A rater might repeatedly have considered to stop scoring as soon as
    65 was reached, in order to spare work & effort. Or, since grading is
    subjective, raters might just judge whether a student's total performance
    was good enough to let him pass (and therefore assigned a 65 to him).
    So 65 wouldn't be an upgrading, but a downgrading.

    With kind regards

    K.
    But that was not true in this case as their was marks above 65. I still would like to know the possibility of it happening if anyone can help with previous equation,

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    Re: Need help to prove professor may have altered grades at our university

    Without making further assumptions I don't think you'll be able to calculate the probability of this happening. Honestly I'm not sure how this probability calculation would help much either. The people you're going to present this stuff too aren't going to be able to follow the math anyways so you could just say it seems like a small probability and that would have about as much impact. I don't think you'll be able to do anything about this round of scores but if you complain loudly enough and if these exams are important enough they might consider have multiple people grade each test. Or they'll just change it to a pass/fail - that's how my written exams were.
    I don't have emotions and sometimes that makes me very sad.

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    Re: Need help to prove professor may have altered grades at our university

    Quote Originally Posted by swamifez View Post
    But that was not true in this case as their was marks above 65.
    I didn't say that this happened in every instance...

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    Re: Need help to prove professor may have altered grades at our university

    Quote Originally Posted by Dason View Post
    Without making further assumptions I don't think you'll be able to calculate the probability of this happening.
    i definitely concur with this. like to make such a claim we'd need to know more about the probability distribution of the grades that this professor has given over time for the same (or similar) course and the same (or similar ) exam. and since these aren't objective marks as with multiple choice, then the professor becomes a rater (elaborating on Karabiner's point) which means we'd also need to know something about the probability distribution of ratings for this professor VS other professors grading either the same or a similar exam.

    Carl Sagan (who i think sort of stole it from Laplace) had this great saying of "Extraordinary claims require extraordinary evidence". Accusing a professor of cheating seems like a big-enough claim to me that you'd be need to be ready to back it up with some strong evidence which i honestly don't think you'll be able to have access to without some significant effort.
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    Re: Need help to prove professor may have altered grades at our university


    Quote Originally Posted by spunky View Post
    to make such a claim we'd need to know more about the probability distribution of the grades that this professor has given over time for the same (or similar) course and the same (or similar ) exam.
    Yeah.

    Just throwing this in here... (see attached)
    Attached Images  

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    swamifez (10-06-2014)

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