SOLUTION: What is the variance and the standard deviation of the scores 51,55,61,62,68,71,71,73,81,82,87,89,92,94,95,100? Can someone please help and show all work? Thanks

Question 563426: What is the variance and the standard deviation of the scores 51,55,61,62,68,71,71,73,81,82,87,89,92,94,95,100?
Can someone please help and show all work?
Thanks
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Note that

and that variance is equal to the square of the standard deviation. The best method is simply to use a calculator to input the data values, and you should obtain

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