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S1- How does coding affect the mean / standard deviation?

Hi guys, I just wanted to know how coding afects the values for mean and standard deviation. So say I multiplied all the data by 10, how would this affect the standard deviation and the mean? Would it have the same effect if I added / took away a number? If not how would it affect the mean and the S.D?

Any responses much appreciated.

Thanks in advance.

EDIT: and also, how would the mean and S.D be affected if I multiplied the data by a constant and added/ took away a number at the same time?