[R] in R when I get negative adjusted R^2 using "lm", what might be the problem?
comtech.usa at gmail.com
Mon Nov 10 02:36:38 CET 2008
This is a linear regression of Y onto factors...
If I take log of Y, and regress onto the factors, I got:
Multiple R-squared: 0.4023, Adjusted R-squared: 0.2731
If I don't take log of Y, and directly regress Y onto the factors, I got:
Multiple R-squared: 0.1807, Adjusted R-squared: -0.001112
Is this negative adjusted R^2 a problem?
What observation can I make here and what might be the problem?
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