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Mr. Battles raised all of his students' scores on a recent exam by 5 points. What effect did this have on the mean and standard deviation of the scores?

Mr. Battles raised all of his students' scores on a recent exam by 5 points. What effect did this have on the mean and standard deviation of the scores?
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3 votes
Mr. Battles raised all of his students' scores on a recent exam by 5 points. What effect did this have on the mean and standard deviation of the scores?

asked
User Stuart Malone
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7.9k points

2 Answers

5 votes
I had to answer this before...

The answer is The mean increased by 5 points, but the standard deviation remained the same.
answered
User Dominik Szopa
by
8.2k points
5 votes
The mean will go up, however little

The standard deviation will also go up.


hope this helps
answered
User Martin Gamulin
by
8.3k points
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