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consider a scenario of 115 students in a 1000 point biochemistry course. say 15 of them score above 90% of the total pts available for a course (between 900 and 1000 pts). That leaves 100 students who scored less than 90%.
Of the 100 students below 90%, roughly 60 of them score between 83-87%. Of this group of 60 "average students", there is a 1st and a 60th. the 1st in this group of 60 is 16th overall in the class, with a 87%. But if you look at the back of this group of 60, there someone sitting at the 75th spot in class, with a 83%
my point is, if the standard deviation of a group is small, then the distribution is useless and essentially the 75th rank = 15th rank
hence, the USMLE step 1..
Of the 100 students below 90%, roughly 60 of them score between 83-87%. Of this group of 60 "average students", there is a 1st and a 60th. the 1st in this group of 60 is 16th overall in the class, with a 87%. But if you look at the back of this group of 60, there someone sitting at the 75th spot in class, with a 83%
my point is, if the standard deviation of a group is small, then the distribution is useless and essentially the 75th rank = 15th rank
hence, the USMLE step 1..