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If the standard deviation of a data set was originally 8, and if each value in...

If the standard deviation of a data set was originally 8, and if each value in the data set was multiplied by 8.5, what would be the standard deviation of the resulting data?

a. 17
b. 9
c. 8
d. 68
math   Statistics-And-Probability   
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Answer #1

If each value multiplied by 8.5 then standard deviation will be change by same amount .

That is new standard deviation = 8 * 8.5 = 68

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