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cdrozdowski111

USA
247 Posts
Posted - 10/04/2013 :  06:19:55 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Why ,in the docs for the DescStats dialog box (http://www.originlab.com/www/helponline/origin/en/UserGuide/The_DescStats_Dialog_Box.html) is the SE of Mean formula listed as 
s/sqrt(w)
rather than 
s/sqrt(n)
?

Hideo Fujii

USA
1582 Posts
Posted - 10/04/2013 :  3:31:02 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi cdrozdowski111,

I'm not a statistician, but I think in case of when the data has weights. If all weights are 1, then w=n.

--Hideo Fujii
OriginLab
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cdrozdowski111

USA
247 Posts
Posted - 10/04/2013 :  8:13:40 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Statistician or not, you are correct. In fact w is defined later on the page as the sum of weights which, as you say, would be n for unweighted data. I just needed a nudge in the right direction.
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