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Replies in this thread : 5
Author  Topic : Stat Deviant...by hand  
Tranquility Acres West Basic User Posts : 8 
I am no math whiz by any means...and in tallying up the stat deviant, to me, should be fairly simple. Take your highest number in a section and subtract the lowest number. But then what after you have the 3 numbers together?? That's when I fall back to being that awkward teen in algebra. Any help is appreciated as all the calcs for this are gone. Id like to know/work on my stat deviants. Thank you.


GaylanStudio Family Account Owner Posts : 1,000+ 
this post has been edited 1 time(s) Standard deviation is a statistics calculation involving taking the square root of each number in the set and then doing some more stuff. I think it would be extremely tedious to do it manually. You can find the calculation through a Google search and try. If you have a spreadsheet application (Excel) there are functions within it to do the work, which is what I use. Standard Deviation Article if you want to try: https://www.khanacademy.org/math/probability/datadistributionsa1/summarizingspreaddistributions/a/calculatingstandarddeviationstepbystep If you have a horse or two you want the numbers for I don't mind doing a few for you. My spreadsheet was developed many years ago when the other oneline calculator was available  but it's not that slick  and it duplicates the numbers.  Last edited by GaylanStudio on 4/6/2018 9:49:41 PM 

GaylanStudio Family Account Owner Posts : 1,000+ 
Just found this! It's a calculator! I'm not sure if it is exactly the same calculation (there are at least two) but it gave me a number pretty close to what I have so it may be useful but still a bit tedious to enter the numbers in. www.calculator.net/standarddeviationcalculator.html?numberinputs=96%2C90%2C85%2C103%2C93%2C97%2C88%2C98%2C77%2C88%2C85%2C83%2C92%2C79%2C84%2C95%2C71%2C92&x=66&y=21 

Tranquility Acres Basic User Posts : 95 
Thanks Gaylan good enough lol 

Gaylan Training Center Premium Member Posts : 231 
this post has been edited 2 time(s) We need one that does the "population" version. The difference  a "Sample" assumes there are more values but you are taking a sample of them, not all. The "Population" version assumes you have all the data for the entire group, presumably more accurate. Happy if this helps you all. Data: 96,90,85,103,93,97,88,98,77,88,85,83,92,79,84,95,71,92 Sample Standard Deviation, s 8.124038404636 Variance (Sample Standard), s2 66 Population Standard Deviation  This One 7.895146188218 Variance (Population Standard), s2 62.333333333333 Total Numbers, N 18 Sum: 1596 Mean (Average): 88.666666666667 Standard Error of the Mean (SEx¯: 1.9148542155127  Last edited by Gaylan Training Center on 4/8/2018 2:02:08 PM  Last edited by Gaylan Training Center on 4/8/2018 2:03:37 PM 

Tranquility Acres West Basic User Posts : 8 
Oh that one that's even better lol I had better sd than i had originally thought. Thanks Gaylan! 
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