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8 votes
8 votes
Help please !!!!!!!!!

Help please !!!!!!!!!-example-1
User Daniely
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1 Answer

13 votes
13 votes

Answer: (a): Good course, (b): Bad course

Explanation:

Firstly, because the standard deviation of the good course results is lower, there is less variation so he performs more consistently there.

Secondly, the trick with the second question is that while the mean of the bad course is slightly less, the standard deviation is quite a lot higher than that of the good course, so it's more likely that the highest single test score belongs to the bad course.

User Jamie McCarthy
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2.9k points