Statistics

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your medical terminology instructor listed the following grades for the class out of a 75 point test:
33,34,43,45,45,54,55,59,60,62,64,66,67,68,67,68,68,69,70,70
a.find the 90th percentile
b. your score was 59, what is your percentile?

  • Statistics -

    a.
    k =90

    n = 20

    90th percentile = k/100 *n


    90/100* 20

    =18

    90th percentile = 69


    b.

    percentile = R/(n +1)

    8/(20+ 1)

    8/21 = .38095 *100 =

  • Statistics -

    40

  • Statistics -

    90

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