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OpenStudy (anonymous):
Check? A data set has a variance of 42. What is the standard deviation of the data set? Round to the nearest tenth ANSWER ~ 6.4 @ganeshie8
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OpenStudy (anonymous):
Variance is commonly denoted as sigma^2 Standard deviation is denoted as sigma. So std. dev. is the square root of the variance. sqrt(42) = 6.4 sounds correct
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