hierarchical partitioning

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hierarchical partitioning

Ulrike Grömping-2
Dear Meike,

a variable with negative entry for J in IJ (I cannot become negative)
explains more in the joint model than it can explain when alone in the model.
You can find discussions of such phenomena e.g. under the key
word "suppression" or "suppressor variables".

And by the way, as you are using hier.part, you might also be interested in
the package relaimpo (linear model with R-squared only, but more different
metrics for partitioning).

Regards, Ulrike

******************************
Prof. Dr. Ulrike Grömping
Fachbereich II
TFH Berlin
Luxemburger Str. 10
13353 Berlin
www: www.tfh-berlin.de/~groemp/

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