square x inside sigma??

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Noor - 05 Oct 2008 11:21 GMT

Hi All,

As i know that the following function in the below link representing
the 'weighted mean', but if X inside the sigma is replaced by X^2,
what is the result?

http://upload.wikimedia.org/math/1/3/d/13d572ad5f05b5f6bc9d80c3b603657c.png

Best regards

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Greg Heath - 06 Oct 2008 12:38 GMT

> Hi All,
>
[quoted text clipped - 5 lines]
>
> Best regards

Weighted second moment.

Hope this helps.

Greg

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Noor - 06 Oct 2008 22:14 GMT

> > Hi All,
>
[quoted text clipped - 11 lines]
>
> Greg

Thank you for your reply
unfortuntly i duplicated this message many times in the group
sci.stat.math becuase i face some problem in the posting
but you can continue the dissuction in the following link
http://groups.google.com/group/sci.stat.math/browse_thread/thread/aad5baafbdfba297#

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Math Forum / Mathematics / Statistics / October 2008

square x inside sigma??