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Thread: Derivation of an equation of Influential Analysis in OLS

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    Derivation of an equation of Influential Analysis in OLS




    Hi to everyone, I'm new to this forum and I'm very pleased for the existence of this forum, since the fact that forums in these times are in decay. I'm not a native English speaker so I ask for a little of patience lol

    I'm studying Ordinary Least Squares, and in the section of Influential Analysis of the class notes, we have an expression to detect influential observations (more details in the image)


    EDIT: Corrected image




    I do not have any idea of the origin of these expressions and obviously their derivations (the class notes have a lot of references, but mostly they are difficult to access). They have a name? Are they a specific theorem?

    Thanks a lot: wave:
    Last edited by alexjmackh_94; 04-17-2017 at 10:34 PM. Reason: Image correct

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    Re: Derivation of an equation of Influential Analysis in OLS

    Cleared from moderator's queue!

    BTW, your link doesn't show any pictures for me. I mean, it opens the page but it doesn't display anything.
    Last edited by spunky; 04-17-2017 at 01:16 PM.
    for all your psychometric needs! https://psychometroscar.wordpress.com/about/

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    Re: Derivation of an equation of Influential Analysis in OLS


    You are right. It seems like that image hosting isn't working very well...

    Now I suppose it's ok!:


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