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How to figure standard deviation.

 
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  #1  
Old 02-04-2013, 07:37 PM
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Join Date: Sep 2009
Location: north platte ne
Posts: 387
How to figure standard deviation.

Hi everone iam trying to figure my standard deviation. My best 8 shot string. Had an es of 16 fps. How do you guys figure sd? Thanks
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  #2  
Old 02-04-2013, 07:53 PM
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Join Date: Oct 2007
Location: Mountians of SW NC, near Asheville
Posts: 1,596
Re: How to figure standard deviation.

Find the average of what ever you wish to measue.
Figure the difference for each sample from the average, then square that difference,
Total the squares of all your samples.
Find the square root of the total of the squares.
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  #3  
Old 02-04-2013, 08:49 PM
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Join Date: Jan 2008
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Re: How to figure standard deviation.

Google, "Standard Deviation Calculator", there are several listed. Just enter your numbers and it will give you the answer.
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  #4  
Old 02-04-2013, 10:18 PM
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Join Date: Jul 2007
Location: Billings, Mt
Posts: 754
Re: How to figure standard deviation.

Quote:
Originally Posted by Greyfox View Post
Google, "Standard Deviation Calculator", there are several listed. Just enter your numbers and it will give you the answer.
Never knew this was available - thanks
Never seizes to amaze me about what google can come up with.
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  #5  
Old 02-05-2013, 07:28 PM
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Join Date: Sep 2009
Location: north platte ne
Posts: 387
Re: How to figure standard deviation.

Tried it. Your right. It worked great.
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