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November 5th, 2011, 02:48 PM  #1 
Newbie Joined: Nov 2011 Posts: 1 Thanks: 0  Mean and standard deviation
Hey everyone, You will have to forgive me, my stats is a bit rusty =) I have 2 pieces of information about a study  the mean (15.4) and standard deviation (5.0). Am I correct to imply that anything within +/ 5 of the mean will represent ~64% of the population, +/ 10 of the mean would be nearly 99%? Thanks! Jared 
November 5th, 2011, 02:58 PM  #2 
Global Moderator Joined: May 2007 Posts: 6,823 Thanks: 723  Re: Mean and standard deviation
For a normal distribution, the 2? domain is about 95%, not 99%.


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deviation, standard 
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