
Probability and Statistics Basic Probability and Statistics Math Forum 
 LinkBack  Thread Tools  Display Modes 
December 10th, 2016, 06:41 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, 09:00 AM  #2 
Senior Member Joined: Sep 2015 From: CA Posts: 1,304 Thanks: 669 
variance is the square of deviation $\sigma < 1 \Rightarrow \sigma > \sigma^2$ $\sigma > 1 \Rightarrow \sigma^2 > \sigma$ 

Tags 
deviation, greater, normal, variance 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
variance of standard deviation  Kinroh  Advanced Statistics  1  September 5th, 2013 12:31 PM 
Standard deviation and Variance  HenryMolaison  Algebra  2  February 20th, 2013 12:33 PM 
Help!Variance and Standard Deviation  margybear  Algebra  3  February 22nd, 2012 09:10 PM 
Finding the variance, given mean and standard deviation  tsl182forever8  Algebra  2  February 10th, 2012 05:37 AM 
Find the mean, variance, and standard deviation  212111  Advanced Statistics  0  August 27th, 2009 01:10 AM 