math...Please help!!!!

This is a standard deviation question.

I don't know much about standard deviation.

Here it goes... Teachers making 30,000 to $60,000 the union is considering a $1,000 pay raise.
A. Will the standard deviation change and the mean and the median stay the same?
B. Will the mean and the median change and the same and the standard deviation stay the same?
c. will the median and standard deviation change and mean stay the same?
D. will the mean and standard deviation change and the median stay the same?

asked by tanisha
  1. I think B, but the language is garbled.

    The SD will not change. Read up on how the SD is figured, and you should see why.

    posted by Steve

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