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December 10th, 2016, 07:41 AM  #1 
Newbie Joined: Dec 2016 From: HK Posts: 8 Thanks: 0  Is it normal if deviation is greater than variance?
Here is my problem, a sample of 7.55, 6.13, 5.44, 7.19, 6.33 My answer is mean = 6.528 sample variance = 0.716 and deviation = 0.846 but i was told that variance is always greater than deviation, so i am confused now. 
December 10th, 2016, 10:00 AM  #2 
Senior Member Joined: Sep 2015 From: CA Posts: 936 Thanks: 506 
variance is the square of deviation $\sigma < 1 \Rightarrow \sigma > \sigma^2$ $\sigma > 1 \Rightarrow \sigma^2 > \sigma$ 

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deviation, greater, normal, variance 
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