[R] Help - linear regression

Hi, I am trying a linear regression model where the dependent variable is the size of the heart corrected for the patient's height and weight. This is labelled as LAVI. The independent variables are race (european or non-eurpoean), age, sex (male or female) of the patient and whether they hav

[R] help_R2.5 updating

Hi, I run windows vista ultimate in my laptop and run R 2.5 I am trying to update the packages but it comes up with an error message ""Warning in install.packages(update[instlib == l, "Package"], l, contriburl = contriburl, : 'lib' is not writable Error in install.packages(update[