Many thanks for all the replies! I will review your suggestions and
probably come back with more questions.
All the best,
Julian
On Mon, Feb 1, 2010 at 12:56 AM, Julian Burgos <[log in to unmask]> wrote:
> Dear list,
>
> I need to fit a multiple regression in which individual data point in the
> independent and the dependent variables have an associated variance or
> standard deviation. This arises because both the dependent and independent
> variables are the output of very large simulation models.
>
> To make things clear, instead of having just a table of dependent (X) and
> independent (Y1, Y2) variable values like this:
>
>
> X Y1 Y2
> 2.2 3.4 4.5
> 4.1 2.6 5.2
> 7.4 1.4 4.6
> ....
>
> I have a table in which each value has an associated standard deviation:
>
>
> X Y1 Y2
> 2.2 (0.31) 3.4 (0.45) 4.5 (0.21)
> 4.1 (0.28) 2.6 (0.23) 5.2 (0.54)
> 7.4 (0.45) 1.4 (0.63) 4.6 (0.37)
>
>
> What would be the best way to fit a multiple regression taking into account
> the variance of the individual values of the independent and dependent
> variables? Any references to methods or R packages will be greatly welcomed.
>
> Julian
>
>
> --
> Julian Mariano Burgos
> Hafrannsóknastofnunin/Marine Research Institute
> Skúlagata 4, 121 Reykjavík, Iceland
> Sími/Telephone : +354-5752037
> Bréfsími/Telefax: +354-5752001
> Netfang/Email: [log in to unmask], [log in to unmask]
>
--
Julian Mariano Burgos
Hafrannsóknastofnunin/Marine Research Institute
Skúlagata 4, 121 Reykjavík, Iceland
Sími/Telephone : +354-5752037
Bréfsími/Telefax: +354-5752001
Netfang/Email: [log in to unmask], [log in to unmask]
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