document.write( "Question 614808: A discrete random variable has a mean of 400 and a variance of 64. What is the standard deviation?
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Algebra.Com's Answer #386719 by stanbon(75887)\"\" \"About 
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A discrete random variable has a mean of 400 and a variance of 64. What is the standard deviation?
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\n" ); document.write( "std = sqrt(variance) = sqrt(64) = 8
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