Friday, July 24, 2009
July 24, 2009
On a certain math exam, 10% of the students got 70 points, 25% got 80 points, 20% got 85 points, 15% got 90 points, and the rest got 95 points. What is the difference between the mean and the median score on this exam?
Interactive version of problem and solution.
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Martin Gardner's Mathematical Games
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