Dummy-coded predictor in linear regression with unequal group sizes

Posted by Tanja Gabriele Baudson on May 04, 2011; 4:36pm
URL: http://spssx-discussion.165.s1.nabble.com/Dummy-coded-predictor-in-linear-regression-with-unequal-group-sizes-tp4370421.html

Hi all,

I am conducting a multiple linear regression using a dummy-coded
predictor. However, the two groups (first language German vs. not
German) are very different in size (non-native speakers about 10%).
What consequences does this have on the interpretability of a
nonsignificant effect?

Thanks for your help.

Regards
Tanya
--
Tanja Gabriele Baudson
Universität Trier
FB I Psychologie
Hochbegabtenforschung und -förderung
54286 Trier
Fon 0651/201-4558
Fax [phone]
Email [hidden email]
Web http://www.uni-trier.de/index.php?id=9492

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