Tayra V.

# Standard deviation

Find the mean and standard deviation for the set of data

{25,16,28,6,30,7,26,20,22}

A. Mean: 20; standard deviation: 8.47

B. Mean: 22; standard deviation: 8.47

C. Mean: 20; standard deviation: 8.23

D. Mean: 22; standard deviation: 8.23

William W.

tutor
Are you expected to do this problem manually or are you allowed to use a calculator with a mean and standard deviation calculation built into it (like a TI-84)?
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