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Math Help - [SOLVED] Probabilistic Analysis

  1. #1
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    [SOLVED] Probabilistic Analysis

    The final exams for your "Probablistic Analysis" course have been graded.

    A notice is posted giving the following information about the distribution of scores:

    * Lowest possible score = 0, highest possible score = 150
    * Lowest score attained = 17, highest score attained = 146
    * mean = 116, median = 120, standard deviation = 20

    Assuming that the examination is graded "on the curve", the question is:

    Based on the distribution of grades, do you recommend this course?
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  2. #2
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    I don't get what you mean. I think whether you would recommmend the course to a person, is largely dependent on the person's standards and ability to do well in the course? Not quite sure though.
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  3. #3
    MHF Contributor matheagle's Avatar
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    You can convert from a normal to a standard normal if you know the percentage of A's, B's,...

    You would use Z={X-\mu\over\sigma} to transform your percentiles.
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  4. #4
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    A+ 3%
    a 17%
    a- 27%
    b+ 19%
    b 14%
    b- 13%
    c+ 5%
    c 3%
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  5. #5
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    Quote Originally Posted by dxdy View Post
    A+ 3%
    a 17%
    a- 27%
    b+ 19%
    b 14%
    b- 13%
    c+ 5%
    c 3%
    Erm your % add up to 101% and not 100%.
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  6. #6
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    Quote Originally Posted by knighty View Post
    Erm your % add up to 101% and not 100%.
    That's because of rounding. I found the solution anyway.
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