How to prove that class A scores are higher than classs B

tnaser

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Joined
Mar 18, 2013
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2
Hi

If I have grades of 2 classes and ranked , how can I prove that class A scores higher than class B with statically significant difference?

Example:
Rank - Grade - class
1- 100 - A
2- 99 - A
3- 97 - B
4- 95 - B
5- 90 - A
..

Thanks
 
What is the exact text of the exercise? Also, what are your thoughts so far?

Please be complete. Thank you! ;)
 
What is the exact text of the exercise? Also, what are your thoughts so far?

Please be complete. Thank you! ;)

It is not exercise , so no complete text. I was thinking to do a weighted rank or ranking correlation
 
Last edited:
It is not exercise , so no complete text. I was thinking to do a weighted rank or ranking correlation
Could you elaborate more on using ranking instead of actual scores? I don't find a good exposition of the method in my handbook.

What came to my mind was to find mean and std.dev. for each class, and then to look at possible tests.
 
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