Least Squares Variance of Residuals Using Matrices and the Hat Matrix, H

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Комментарии
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Michelle! Many thanks for your kind and systematic explanation👍

EunjooSeo-fb
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thanks! i ran across this statement about var(e) and could not understand why, found a nice explanation in your video

griddlebone
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Thanks for this great work presented
In addition, In order not to be biased I would prefer to divide the error squared by n-k-1 degree of freedom especially when one explanatory variables are more than one. Thanks

ezraezekielemmanuel
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Hello! Could you explain why the var of Y is the same as the variance of e? You said it is because X is not random, but what does it imply? Thanks!

nnicollydiva
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I love your videos. You did lose me at 6:35 with I - H. I'm sure it has to do with my age and years out of school. Any help would be appreciated.

jimturner