The average score on Dr. Bostwick’s first stats exam is 80/1…
The average score on Dr. Bostwick’s first stats exam is 80/100, with a standard deviation of 7 points. The average score on Dr. Bostwick’s last stats exam 80/100, with a standard deviation of 2 points. Your friend got a got an 85/100 on both tests. Explain to them why (when compared to the rest of the class) they should be prouder of the second score than the first.
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