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February 9th, 2012, 07:35 PM  #1 
Senior Member Joined: Feb 2012 Posts: 110 Thanks: 0  Finding the variance, given mean and standard deviation
A population of N=10 scores has a mean of 50 and standard deviation of 5. What is the population variance?

February 10th, 2012, 12:14 AM  #2 
Senior Member Joined: Dec 2011 Posts: 277 Thanks: 1  Re: Help please
Hi tsl182forever8, could you please supply the exact wording of the question? Though I'm not good at statistics, I'm quite sure that there isn't enough information to carry out the calculation.

February 10th, 2012, 06:37 AM  #3 
Global Moderator Joined: Nov 2009 From: Northwest Arkansas Posts: 2,766 Thanks: 4  Re: Finding the variance, given mean and standard deviation
Isn't the standard deviation equal to the square root of the variance? Then we have s = ?(v) s^2 = v They gave you s, so square it... 

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