search for: bragadeesh02

Hi, I am trying to run an analysis of variance using R. in my data table "x" is a continuous variable lengthof 200 and "p" is a categorical variable also of length 200 and p is anyone of three categories 1,2 or ,3. if I run summary(aov(x~p,data=test)) I get Response: x Df Sum Sq Mean Sq F value Pr(>F) p 1 3174.7 3174.7 42.749 5.175e-10 ***

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[instlib == l, "Package"], l, contriburl = contriburl, :

Hi, help.I would like to plot the mean and standard deviation against a factor in the xaxis- in other words I want an errorplot. I also want to put the standard deviation like a "T" on top of a barplot. How can do this in R Bragadeesh

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 have diabetes and high blood pressure. sample size 2000 patients selected from a community. when I