SOLUTION: A sample of data has a standard deviation of 10. If you were to multiply all of the scores in the data set by factor of nine (9), what would the new standard deviation be?

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Question 630640: A sample of data has a standard deviation of 10. If you were to multiply all of the scores in the data set by factor of nine (9), what would the new standard deviation be?
Answer by stanbon(75887) About Me  (Show Source):
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A sample of data has a standard deviation of 10. If you were to multiply all of the scores in the data set by factor of nine (9), what would the new standard deviation be?
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std(aX) = |a|*std(X)
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If std(X) = 10 then std(9X) = |9|*std(X) = 9*10 = 90
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Cheers,
Stan H.